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<span class="kw">let </span><font color="Maroon" title="c1">S</font> be   non  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>   non  <a href="struct_0.html#V11" title="STRUCT_0:attr.11">void</a>   <a href="aofa_a00.html#V13" title="AOFA_A00:attr.13">1-1-connectives</a>   <a href="aofa_a00.html#V16" title="AOFA_A00:attr.16">bool-correct</a>  4,1 <a href="aofa_a00.html#V18" title="AOFA_A00:attr.18">integer</a>  11,1,1 <a href="aofa_a00.html#V21" title="AOFA_A00:attr.21">-array</a>  11 <a href="aofa_a00.html#V23" title="AOFA_A00:attr.23">array-correct</a>   <a href="aofa_a00.html#L6" title="AOFA_A00:struct.6">BoolSignature</a> ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">X</font> being  <a href="relat_1.html#V2" title="RELAT_1:attr.2">V3</a>() <a href="pboole.html#NM1" title="PBOOLE:NM.1">ManySortedSet</a> of  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b2">T</font> being   <a href="msualg_1.html#V4" title="MSUALG_1:attr.4">non-empty</a>  <font color="Olive">b<sub>1</sub></font>,<font color="Maroon" title="c1">S</font> <a href="msafree4.html#V5" title="MSAFREE4:attr.5">-terms</a>   <a href="msafree4.html#V6" title="MSAFREE4:attr.6">all_vars_including</a>   <a href="msafree4.html#V7" title="MSAFREE4:attr.7">inheriting_operations</a>   <a href="msafree4.html#V8" title="MSAFREE4:attr.8">free_in_itself</a>   <a href="aofa_a00.html#V3" title="AOFA_A00:attr.3">vf-free</a>   <a href="aofa_a01.html#V6" title="AOFA_A01:attr.6">integer-array</a>   <a href="aofa_a00.html#L1" title="AOFA_A00:struct.1">VarMSAlgebra</a> over <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b3">G</font> being   <a href="aofa_a01.html#V4" title="AOFA_A01:attr.4">basic</a>   <a href="aofa_a00.html#L4" title="AOFA_A00:struct.4">GeneratorSystem</a> over <font color="Maroon" title="c1">S</font>,<font color="Olive" title="b1">X</font>,<font color="Olive" title="b2">T</font><br/>  for <font color="Olive" title="b4">I</font> being   <a href="aofa_a00.html#V19" title="AOFA_A00:attr.19">integer</a>  <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b5">i</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b3">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Olive" title="b4">I</font><br/>  for <font color="Olive" title="b6">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b3">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Olive" title="b2">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b6">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b5">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b4">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b5">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b6">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c2">X</font> be  <a href="relat_1.html#V2" title="RELAT_1:attr.2">V3</a>() <a href="pboole.html#NM1" title="PBOOLE:NM.1">ManySortedSet</a> of  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">T</font> being   <a href="msualg_1.html#V4" title="MSUALG_1:attr.4">non-empty</a>  <font color="Maroon" title="c2">X</font>,<font color="Maroon" title="c1">S</font> <a href="msafree4.html#V5" title="MSAFREE4:attr.5">-terms</a>   <a href="msafree4.html#V6" title="MSAFREE4:attr.6">all_vars_including</a>   <a href="msafree4.html#V7" title="MSAFREE4:attr.7">inheriting_operations</a>   <a href="msafree4.html#V8" title="MSAFREE4:attr.8">free_in_itself</a>   <a href="aofa_a00.html#V3" title="AOFA_A00:attr.3">vf-free</a>   <a href="aofa_a01.html#V6" title="AOFA_A01:attr.6">integer-array</a>   <a href="aofa_a00.html#L1" title="AOFA_A00:struct.1">VarMSAlgebra</a> over <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b2">G</font> being   <a href="aofa_a01.html#V4" title="AOFA_A01:attr.4">basic</a>   <a href="aofa_a00.html#L4" title="AOFA_A00:struct.4">GeneratorSystem</a> over <font color="Maroon" title="c1">S</font>,<font color="Maroon" title="c2">X</font>,<font color="Olive" title="b1">T</font><br/>  for <font color="Olive" title="b3">I</font> being   <a href="aofa_a00.html#V19" title="AOFA_A00:attr.19">integer</a>  <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b4">i</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b2">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Olive" title="b3">I</font><br/>  for <font color="Olive" title="b5">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b2">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Olive" title="b1">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b5">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b4">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b3">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b4">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b5">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c3">T</font> be   <a href="msualg_1.html#V4" title="MSUALG_1:attr.4">non-empty</a>  <font color="Maroon" title="c2">X</font>,<font color="Maroon" title="c1">S</font> <a href="msafree4.html#V5" title="MSAFREE4:attr.5">-terms</a>   <a href="msafree4.html#V6" title="MSAFREE4:attr.6">all_vars_including</a>   <a href="msafree4.html#V7" title="MSAFREE4:attr.7">inheriting_operations</a>   <a href="msafree4.html#V8" title="MSAFREE4:attr.8">free_in_itself</a>   <a href="aofa_a00.html#V3" title="AOFA_A00:attr.3">vf-free</a>   <a href="aofa_a01.html#V6" title="AOFA_A01:attr.6">integer-array</a>   <a href="aofa_a00.html#L1" title="AOFA_A00:struct.1">VarMSAlgebra</a> over <font color="Maroon" title="c1">S</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">G</font> being   <a href="aofa_a01.html#V4" title="AOFA_A01:attr.4">basic</a>   <a href="aofa_a00.html#L4" title="AOFA_A00:struct.4">GeneratorSystem</a> over <font color="Maroon" title="c1">S</font>,<font color="Maroon" title="c2">X</font>,<font color="Maroon" title="c3">T</font><br/>  for <font color="Olive" title="b2">I</font> being   <a href="aofa_a00.html#V19" title="AOFA_A00:attr.19">integer</a>  <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b3">i</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b1">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Olive" title="b2">I</font><br/>  for <font color="Olive" title="b4">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Olive" title="b1">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b4">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b3">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b3">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b4">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c4">G</font> be   <a href="aofa_a01.html#V4" title="AOFA_A01:attr.4">basic</a>   <a href="aofa_a00.html#L4" title="AOFA_A00:struct.4">GeneratorSystem</a> over <font color="Maroon" title="c1">S</font>,<font color="Maroon" title="c2">X</font>,<font color="Maroon" title="c3">T</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">I</font> being   <a href="aofa_a00.html#V19" title="AOFA_A00:attr.19">integer</a>  <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font><br/>  for <font color="Olive" title="b2">i</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Olive" title="b1">I</font><br/>  for <font color="Olive" title="b3">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b3">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b2">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b2">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b3">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c5">I</font> be   <a href="aofa_a00.html#V19" title="AOFA_A00:attr.19">integer</a>  <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">i</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font><br/>  for <font color="Olive" title="b2">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b2">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b1">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b1">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b2">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c6">i</font> be   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  for <font color="Olive" title="b1">M</font> being   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>  st  not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  holds <br/> <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Olive" title="b1">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Olive" title="b1">M</font></span>)</span></span><br/><span class="kw">let </span><font color="Maroon" title="c7">M</font> be   <a href="aofa_a01.html#V3" title="AOFA_A01:attr.3">pure</a>   <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of  the <a href="aofa_a00.html#U4" title="AOFA_A00:sel.4">generators</a> of <font color="Maroon" title="c4">G</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> (  not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a>  implies  <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span> )</span><br/>













<span class="kw">set </span><font color="Maroon" title="c8">t</font> = <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span>;<br/>
<span class="kw">assume </span><a NAME="E1:156"/><span class="lab"><font color="Green" title="E85">A1</font></span>: 
 not <font color="Maroon" title="c3">T</font> is  <a href="aofa_a01.html#V8" title="AOFA_A01:attr.8">array-degenerated</a> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  <a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="pboole.html#R8" title="PBOOLE:pred.8">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span><br/>

<span class="kw">reconsider </span><font color="Maroon" title="c9">N</font> = <font color="Maroon" title="c7">M</font> as    <a href="msafree4.html#M1" title="MSAFREE4:mode.1">Element</a> of <span class="p1">(<span class="default"><a href="aofa_a01.html#K1" title="AOFA_A01:func.1">FreeGen</a> <font color="Maroon" title="c3">T</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <span class="kw">by</span> <span class="lab"><a class="ref" href="aofa_a01.html#D4" target="_self" onmouseover="rs('aofa_a01/D4')" onmouseout="rh()">Def4</a></span>;<br/>
<a NAME="E3:156"/>
 <a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c9">N</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font>
 
;<br/>
<a NAME="E4:156"/><span class="kw">then </span><span class="lab"><font color="Green" title="E86">A2</font></span>: 
<span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="msaterm.html#K2" title="MSATERM:func.2">Sym</a> (<span class="p2">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p3">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>,<font color="Maroon" title="c2">X</font>)</span>)</span> <a href="trees_4.html#K4" title="TREES_4:func.4">-tree</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span>
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156"><span class="lab"><font color="Green" title="E85">A1</font></span></a></span>;<br/>
<a NAME="E5:156"/><span class="lab"><font color="Green" title="E87">A3</font></span>: 
( <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c7">M</font> &amp; <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default">1 <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c6">i</font> &amp;  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 2 )
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="finseq_1.html#T44" onmouseover="rs('finseq_1/T44')" onmouseout="rh()">FINSEQ_1:44</a></span>;<br/>
<a NAME="E6:156"/><span class="kw">then </span><span class="lab"><font color="Green" title="E88">A4</font></span>: 
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c7">M</font> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c6">i</font> )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#D4" onmouseover="rs('trees_4/D4')" onmouseout="rh()">TREES_4:def 4</a></span>;<br/>
<a NAME="E7:156"/>
<font color="Maroon" title="c7">M</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K1" title="AOFA_A01:func.1">FreeGen</a> <font color="Maroon" title="c3">T</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="aofa_a01.html#D4" target="_self" onmouseover="rs('aofa_a01/D4')" onmouseout="rh()">Def4</a></span>;<br/>
<a NAME="E8:156"/><span class="kw">then </span>
<font color="Maroon" title="c7">M</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="msafree.html#K12" title="MSAFREE:func.12">FreeGen</a> (<span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>,<font color="Maroon" title="c2">X</font>)
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D16" onmouseover="rs('msafree/D16')" onmouseout="rh()">MSAFREE:def 16</a></span>;<br/>
<span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c10">m</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <span class="kw"> such that </span><br/><a NAME="E10:156"/><span class="lab"><font color="Green" title="E89">A5</font></span>: 
( <font color="Maroon" title="c10">m</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <font color="Maroon" title="c2">X</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> &amp; <font color="Maroon" title="c7">M</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> )
 <span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D15" onmouseover="rs('msafree/D15')" onmouseout="rh()">MSAFREE:def 15</a></span>;<br/>
<a NAME="E11:156"/>
<font color="Maroon" title="c6">i</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K1" title="AOFA_A01:func.1">FreeGen</a> <font color="Maroon" title="c3">T</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="aofa_a01.html#D4" target="_self" onmouseover="rs('aofa_a01/D4')" onmouseout="rh()">Def4</a></span>;<br/>
<a NAME="E12:156"/><span class="kw">then </span>
<font color="Maroon" title="c6">i</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="msafree.html#K12" title="MSAFREE:func.12">FreeGen</a> (<font color="Maroon" title="c5">I</font>,<font color="Maroon" title="c2">X</font>)
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D16" onmouseover="rs('msafree/D16')" onmouseout="rh()">MSAFREE:def 16</a></span>;<br/>
<span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c11">j</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <span class="kw"> such that </span><br/><a NAME="E14:156"/><span class="lab"><font color="Green" title="E90">A6</font></span>: 
( <font color="Maroon" title="c11">j</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <font color="Maroon" title="c2">X</font> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font> &amp; <font color="Maroon" title="c6">i</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> )
 <span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D15" onmouseover="rs('msafree/D15')" onmouseout="rh()">MSAFREE:def 15</a></span>;<br/>
<a NAME="E15:156"/>
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p2"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p2">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p2"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span> )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E6:156"><span class="lab"><font color="Green" title="E88">A4</font></span></a>, <a class="txt" href="#E10:156"><span class="lab"><font color="Green" title="E89">A5</font></span></a>, <a class="txt" href="#E14:156"><span class="lab"><font color="Green" title="E90">A6</font></span></a>, <a class="ref" href="trees_4.html#T3" onmouseover="rs('trees_4/T3')" onmouseout="rh()">TREES_4:3</a></span>;<br/>
<a NAME="E16:156"/><span class="kw">then </span><span class="lab"><font color="Green" title="E91">A7</font></span>: 
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p3"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <span class="p3"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> )
 
;<br/>
<a NAME="E17:156"/>
(  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> &amp;  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> )
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="trees_1.html#T22" onmouseover="rs('trees_1/T22')" onmouseout="rh()">TREES_1:22</a></span>;<br/>
<a NAME="E18:156"/><span class="kw">then </span>
( <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K7" title="FINSEQ_1:func.7">^</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> &amp; <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K7" title="FINSEQ_1:func.7">^</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="txt" href="#E10:156"><span class="lab"><font color="Green" title="E89">A5</font></span></a>, <a class="txt" href="#E14:156"><span class="lab"><font color="Green" title="E90">A6</font></span></a>, <a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a>, <a class="ref" href="trees_4.html#T11" onmouseover="rs('trees_4/T11')" onmouseout="rh()">TREES_4:11</a></span>;<br/>
<a NAME="E19:156"/><span class="kw">then </span><span class="lab"><font color="Green" title="E92">A8</font></span>: 
( <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> &amp; <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> )
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="finseq_1.html#T34" onmouseover="rs('finseq_1/T34')" onmouseout="rh()">FINSEQ_1:34</a></span>;<br/>
<a NAME="E20:156"/><span class="lab"><font color="Green" title="E93">A9</font></span>: 
 <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="aofa_a01.html#T73" target="_self" onmouseover="rs('aofa_a01/T73')" onmouseout="rh()">Th73</a></span>;<br/>
<a NAME="E21:156"/><span class="lab"><font color="Green" title="E94">A10</font></span>: 
<span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>
 
<div><a class="txt" onmouseover="tooltip.show('hs2',this)" onmouseout="tooltip.hide()" onclick="hs2(this)" href="javascript:()" title="156_1"><span class="kw">proof </span></a><div class="add">

<span class="kw">set </span><font color="Maroon" title="c12">A</font> = <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> </span> } </span> ;<br/>
<a NAME="E1:156_1"/><span class="lab"><font color="Green" title="E95">A11</font></span>: 
( <font color="Maroon" title="c7">M</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> </span> } </span>  &amp; <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> </span> } </span>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E6:156"><span class="lab"><font color="Green" title="E88">A4</font></span></a>, <a class="txt" href="#E16:156"><span class="lab"><font color="Green" title="E91">A7</font></span></a>, <a class="txt" href="#E19:156"><span class="lab"><font color="Green" title="E92">A8</font></span></a>, <a class="ref" href="aofa_a00.html#D12" onmouseover="rs('aofa_a00/D12')" onmouseout="rh()">AOFA_A00:def 12</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:156_1"/>
<span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="zfmisc_1.html#T31" onmouseover="rs('zfmisc_1/T31')" onmouseout="rh()">ZFMISC_1:31</a></span>; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="xboole_0.html#D10" onmouseover="rs('xboole_0/D10')" onmouseout="rh()">XBOOLE_0:def 10</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/>

<span class="kw">let </span><font color="Maroon" title="c13">x</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a> ; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="tarski.html#D3" onmouseover="rs('tarski/D3')" onmouseout="rh()">TARSKI:def 3</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> (  not <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> or <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> )</span><br/>

<span class="kw">assume </span><a NAME="E3:156_1"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/>

<span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c14">p</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span><span class="kw"> such that </span><br/><a NAME="E5:156_1"/><span class="lab"><font color="Green" title="E96">A12</font></span>: 
( <font color="Maroon" title="c13">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_1"><span class="lab"><font color="Green" title="E95">A11</font></span></a></span>;<br/>
<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_1_1"><span class="kw">per </span></a><a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="kw">cases </span></a><span class="hide"><a NAME="E1:156_1_1"/>
( <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  or  ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> ) )
 </span><span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#T11" onmouseover="rs('trees_4/T11')" onmouseout="rh()">TREES_4:11</a></span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_1_1_1"><span class="kw">suppose </span></a><a NAME="E1:156_1_1_1"/>
<font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/><div class="add"><a NAME="E2:156_1_1_1"/><span class="kw">then </span>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_9.html#T1" onmouseover="rs('trees_9/T1')" onmouseout="rh()">TREES_9:1</a></span>;<br/><span class="kw">then </span><span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> = 
 <a href="msaterm.html#K2" title="MSATERM:func.2">Sym</a> (<span class="p1">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p2">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>,<font color="Maroon" title="c2">X</font>)
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#D4" onmouseover="rs('trees_4/D4')" onmouseout="rh()">TREES_4:def 4</a></span>
<br/>.= 
<span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><span class="p2">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p3">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>, the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span>
<span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D9" onmouseover="rs('msafree/D9')" onmouseout="rh()">MSAFREE:def 9</a></span>
;<br/><a NAME="E4:156_1_1_1"/><span class="kw">then </span>
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> &amp;  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> )
 ;<br/><span class="kw">hence </span><a NAME="E5:156_1_1_1"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_1"><span class="lab"><font color="Green" title="E96">A12</font></span></a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_1_1_2"><span class="kw">suppose </span></a><a NAME="E1:156_1_1_2"/>
 ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> )
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/><div class="add"><span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c15">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>, <font color="Maroon" title="c16">Q</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a>, <font color="Maroon" title="c17">q</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <font color="Maroon" title="c16">Q</font><span class="kw"> such that </span><br/><a NAME="E3:156_1_1_2"/><span class="lab"><font color="Green" title="E97">A13</font></span>: 
( <font color="Maroon" title="c15">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Maroon" title="c16">Q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c15">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Maroon" title="c15">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Maroon" title="c17">q</font> )
 ;<br/><a NAME="E4:156_1_1_2"/><span class="lab"><font color="Green" title="E98">A14</font></span>: 
( <font color="Maroon" title="c15">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  or <font color="Maroon" title="c15">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a>, <a class="txt" href="#E3:156_1_1_2"><span class="lab"><font color="Green" title="E97">A13</font></span></a>, <a class="ref" href="nat_1.html#T23" onmouseover="rs('nat_1/T23')" onmouseout="rh()">NAT_1:23</a></span>;<br/><a NAME="E5:156_1_1_2"/><span class="kw">then </span>
( <font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> or <font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E3:156_1_1_2"><span class="lab"><font color="Green" title="E97">A13</font></span></a>, <a class="txt" href="#E10:156"><span class="lab"><font color="Green" title="E89">A5</font></span></a>, <a class="txt" href="#E14:156"><span class="lab"><font color="Green" title="E90">A6</font></span></a>, <a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a></span>;<br/><a NAME="E6:156_1_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_4.html#T3" onmouseover="rs('trees_4/T3')" onmouseout="rh()">TREES_4:3</a>, <a class="ref" href="trees_1.html#T29" onmouseover="rs('trees_1/T29')" onmouseout="rh()">TREES_1:29</a></span>;<br/><a NAME="E7:156_1_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c17">q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="tarski.html#D1" onmouseover="rs('tarski/D1')" onmouseout="rh()">TARSKI:def 1</a></span>;<br/><a NAME="E8:156_1_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><a href="numbers.html#K5" title="NUMBERS:func.5">0</a></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_1"><span class="lab"><font color="Green" title="E96">A12</font></span></a>, <a class="txt" href="#E4:156_1_1_2"><span class="lab"><font color="Green" title="E98">A14</font></span></a>, <a class="txt" href="#E20:156"><span class="lab"><font color="Green" title="E93">A9</font></span></a>, <a class="txt" href="#E16:156"><span class="lab"><font color="Green" title="E91">A7</font></span></a>, <a class="txt" href="#E3:156_1_1_2"><span class="lab"><font color="Green" title="E97">A13</font></span></a>, <a class="ref" href="finseq_1.html#T34" onmouseover="rs('finseq_1/T34')" onmouseout="rh()">FINSEQ_1:34</a></span>;<br/><span class="kw">hence </span><a NAME="E9:156_1_1_2"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c7">M</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_1"><span class="lab"><font color="Green" title="E96">A12</font></span></a>, <a class="txt" href="#E6:156"><span class="lab"><font color="Green" title="E88">A4</font></span></a>, <a class="ref" href="tarski.html#D1" onmouseover="rs('tarski/D1')" onmouseout="rh()">TARSKI:def 1</a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div></div><span class="kw">end;</span></div>

</div><span class="kw">end;</span></div>
<a NAME="E22:156"/><span class="lab"><font color="Green" title="E95">A15</font></span>: 
<span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font>
 
<div><a class="txt" onmouseover="tooltip.show('hs2',this)" onmouseout="tooltip.hide()" onclick="hs2(this)" href="javascript:()" title="156_2"><span class="kw">proof </span></a><div class="add">

<span class="kw">set </span><font color="Maroon" title="c12">A</font> = <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> </span> } </span> ;<br/>
<a NAME="E1:156_2"/><span class="lab"><font color="Green" title="E96">A16</font></span>: 
( <font color="Maroon" title="c6">i</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> </span> } </span>  &amp; <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> </span> } </span>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font> )
 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E6:156"><span class="lab"><font color="Green" title="E88">A4</font></span></a>, <a class="txt" href="#E16:156"><span class="lab"><font color="Green" title="E91">A7</font></span></a>, <a class="txt" href="#E19:156"><span class="lab"><font color="Green" title="E92">A8</font></span></a>, <a class="ref" href="aofa_a00.html#D12" onmouseover="rs('aofa_a00/D12')" onmouseout="rh()">AOFA_A00:def 12</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:156_2"/>
<span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="zfmisc_1.html#T31" onmouseover="rs('zfmisc_1/T31')" onmouseout="rh()">ZFMISC_1:31</a></span>; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="xboole_0.html#D10" onmouseover="rs('xboole_0/D10')" onmouseout="rh()">XBOOLE_0:def 10</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/>

<span class="kw">let </span><font color="Maroon" title="c13">x</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a> ; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="tarski.html#D3" onmouseover="rs('tarski/D3')" onmouseout="rh()">TARSKI:def 3</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> (  not <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font> or <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span> )</span><br/>

<span class="kw">assume </span><a NAME="E3:156_2"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c5">I</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/>

<span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c14">p</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span><span class="kw"> such that </span><br/><a NAME="E5:156_2"/><span class="lab"><font color="Green" title="E97">A17</font></span>: 
( <font color="Maroon" title="c13">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_2"><span class="lab"><font color="Green" title="E96">A16</font></span></a></span>;<br/>
<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_2_1"><span class="kw">per </span></a><a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="kw">cases </span></a><span class="hide"><a NAME="E1:156_2_1"/>
( <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  or  ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> ) )
 </span><span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#T11" onmouseover="rs('trees_4/T11')" onmouseout="rh()">TREES_4:11</a></span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_2_1_1"><span class="kw">suppose </span></a><a NAME="E1:156_2_1_1"/>
<font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/><div class="add"><a NAME="E2:156_2_1_1"/><span class="kw">then </span>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_9.html#T1" onmouseover="rs('trees_9/T1')" onmouseout="rh()">TREES_9:1</a></span>;<br/><span class="kw">then </span><span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> = 
 <a href="msaterm.html#K2" title="MSATERM:func.2">Sym</a> (<span class="p1">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p2">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>,<font color="Maroon" title="c2">X</font>)
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#D4" onmouseover="rs('trees_4/D4')" onmouseout="rh()">TREES_4:def 4</a></span>
<br/>.= 
<span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><span class="p2">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p3">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>, the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span>
<span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D9" onmouseover="rs('msafree/D9')" onmouseout="rh()">MSAFREE:def 9</a></span>
;<br/><a NAME="E4:156_2_1_1"/><span class="kw">then </span>
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c14">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> &amp; <font color="Maroon" title="c5">I</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> )
 ;<br/><span class="kw">hence </span><a NAME="E5:156_2_1_1"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_2"><span class="lab"><font color="Green" title="E97">A17</font></span></a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_2_1_2"><span class="kw">suppose </span></a><a NAME="E1:156_2_1_2"/>
 ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> )
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span></span><br/><div class="add"><span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c15">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>, <font color="Maroon" title="c16">Q</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a>, <font color="Maroon" title="c17">q</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <font color="Maroon" title="c16">Q</font><span class="kw"> such that </span><br/><a NAME="E3:156_2_1_2"/><span class="lab"><font color="Green" title="E98">A18</font></span>: 
( <font color="Maroon" title="c15">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Maroon" title="c16">Q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c15">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Maroon" title="c15">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Maroon" title="c17">q</font> )
 ;<br/><a NAME="E4:156_2_1_2"/><span class="lab"><font color="Green" title="E99">A19</font></span>: 
( <font color="Maroon" title="c15">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  or <font color="Maroon" title="c15">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a>, <a class="txt" href="#E3:156_2_1_2"><span class="lab"><font color="Green" title="E98">A18</font></span></a>, <a class="ref" href="nat_1.html#T23" onmouseover="rs('nat_1/T23')" onmouseout="rh()">NAT_1:23</a></span>;<br/><a NAME="E5:156_2_1_2"/><span class="kw">then </span>
( <font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> or <font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E3:156_2_1_2"><span class="lab"><font color="Green" title="E98">A18</font></span></a>, <a class="txt" href="#E10:156"><span class="lab"><font color="Green" title="E89">A5</font></span></a>, <a class="txt" href="#E14:156"><span class="lab"><font color="Green" title="E90">A6</font></span></a>, <a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a></span>;<br/><a NAME="E6:156_2_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c17">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_4.html#T3" onmouseover="rs('trees_4/T3')" onmouseout="rh()">TREES_4:3</a>, <a class="ref" href="trees_1.html#T29" onmouseover="rs('trees_1/T29')" onmouseout="rh()">TREES_1:29</a></span>;<br/><a NAME="E7:156_2_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c17">q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="tarski.html#D1" onmouseover="rs('tarski/D1')" onmouseout="rh()">TARSKI:def 1</a></span>;<br/><a NAME="E8:156_2_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c14">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default">1</span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_2"><span class="lab"><font color="Green" title="E97">A17</font></span></a>, <a class="txt" href="#E4:156_2_1_2"><span class="lab"><font color="Green" title="E99">A19</font></span></a>, <a class="txt" href="#E20:156"><span class="lab"><font color="Green" title="E93">A9</font></span></a>, <a class="txt" href="#E16:156"><span class="lab"><font color="Green" title="E91">A7</font></span></a>, <a class="txt" href="#E3:156_2_1_2"><span class="lab"><font color="Green" title="E98">A18</font></span></a>, <a class="ref" href="finseq_1.html#T34" onmouseover="rs('finseq_1/T34')" onmouseout="rh()">FINSEQ_1:34</a></span>;<br/><span class="kw">hence </span><a NAME="E9:156_2_1_2"/>
<font color="Maroon" title="c13">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><font color="Maroon" title="c6">i</font></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156_2"><span class="lab"><font color="Green" title="E97">A17</font></span></a>, <a class="txt" href="#E6:156"><span class="lab"><font color="Green" title="E88">A4</font></span></a>, <a class="ref" href="tarski.html#D1" onmouseover="rs('tarski/D1')" onmouseout="rh()">TARSKI:def 1</a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div></div><span class="kw">end;</span></div>

</div><span class="kw">end;</span></div>
<a NAME="E23:156"/><span class="lab"><font color="Green" title="E96">A20</font></span>: 
 for <font color="Olive" title="b1">s</font> being   <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font>  st <font color="Olive" title="b1">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> &amp; <font color="Olive" title="b1">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font> holds <br/> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Olive" title="b1">s</font>
 
<div><a class="txt" onmouseover="tooltip.show('hs2',this)" onmouseout="tooltip.hide()" onclick="hs2(this)" href="javascript:()" title="156_3"><span class="kw">proof </span></a><div class="add">

<span class="kw">let </span><font color="Maroon" title="c12">s</font> be   <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> ( <font color="Maroon" title="c12">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> &amp; <font color="Maroon" title="c12">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font> implies  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font> )</span><br/>

<span class="kw">assume </span><a NAME="E1:156_3"/><span class="lab"><font color="Green" title="E97">A21</font></span>: 
<font color="Maroon" title="c12">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> (  not <font color="Maroon" title="c12">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font> or  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font> )</span><br/>

<span class="kw">assume </span><a NAME="E2:156_3"/><span class="lab"><font color="Green" title="E98">A22</font></span>: 
<font color="Maroon" title="c12">s</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font></span><br/>

<span class="kw">set </span><font color="Maroon" title="c13">A</font> = <span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c12">s</font> </span> } </span> ;<br/>
<a NAME="E3:156_3"/><span class="lab"><font color="Green" title="E99">A23</font></span>: 
<span class="p1"> { <span class="default"> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> where <font color="Olive" title="b1">p</font> is    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> : <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c12">s</font> </span> } </span>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="aofa_a00.html#D12" onmouseover="rs('aofa_a00/D12')" onmouseout="rh()">AOFA_A00:def 12</a></span>;<br/>
<span class="kw">thus </span><a NAME="E4:156_3"/>
 <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font>
 ; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="xboole_0.html#D10" onmouseover="rs('xboole_0/D10')" onmouseout="rh()">XBOOLE_0:def 10</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span><br/>

<span class="kw">let </span><font color="Maroon" title="c14">x</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a> ; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="tarski.html#D3" onmouseover="rs('tarski/D3')" onmouseout="rh()">TARSKI:def 3</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> (  not <font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font> or <font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  )</span><br/>

<span class="kw">assume </span><a NAME="E5:156_3"/>
<font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">s</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span><br/>

<span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c15">p</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span><span class="kw"> such that </span><br/><a NAME="E7:156_3"/><span class="lab"><font color="Green" title="E100">A24</font></span>: 
( <font color="Maroon" title="c14">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c15">p</font> &amp; <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c15">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c12">s</font> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E3:156_3"><span class="lab"><font color="Green" title="E99">A23</font></span></a></span>;<br/>
<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_3_1"><span class="kw">per </span></a><a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="kw">cases </span></a><span class="hide"><a NAME="E1:156_3_1"/>
( <font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  or  ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> ) )
 </span><span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#T11" onmouseover="rs('trees_4/T11')" onmouseout="rh()">TREES_4:11</a></span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_3_1_1"><span class="kw">suppose </span></a><a NAME="E1:156_3_1_1"/>
<font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span><br/><div class="add"><a NAME="E2:156_3_1_1"/><span class="kw">then </span>
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p2">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p1">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_9.html#T1" onmouseover="rs('trees_9/T1')" onmouseout="rh()">TREES_9:1</a></span>;<br/><span class="kw">then </span><span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c15">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> = 
 <a href="msaterm.html#K2" title="MSATERM:func.2">Sym</a> (<span class="p1">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p2">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>,<font color="Maroon" title="c2">X</font>)
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E4:156"><span class="lab"><font color="Green" title="E86">A2</font></span></a>, <a class="ref" href="trees_4.html#D4" onmouseover="rs('trees_4/D4')" onmouseout="rh()">TREES_4:def 4</a></span>
<br/>.= 
<span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><span class="p2">(<span class="default"><a href="subset_1.html#K10" title="SUBSET_1:func.10">In</a> (<span class="p3">(<span class="default"> the <a href="aofa_a00.html#U7" title="AOFA_A00:sel.7">connectives</a> of <font color="Maroon" title="c1">S</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> 11</span>)</span>, the <a href="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <font color="Maroon" title="c1">S</font>)</span>)</span>, the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span>
<span class="kw">by</span> <span class="lab"><a class="ref" href="msafree.html#D9" onmouseover="rs('msafree/D9')" onmouseout="rh()">MSAFREE:def 9</a></span>
;<br/><a NAME="E4:156_3_1_1"/><span class="kw">then </span>
( <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p4">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span> <a href="trees_2.html#K5" title="TREES_2:func.5">|</a> <font color="Maroon" title="c15">p</font></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span>)</span> <a href="xtuple_0.html#K2" title="XTUPLE_0:func.2">`2</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> &amp; <font color="Maroon" title="c12">s</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c1">S</font> )
 ;<br/><span class="kw">hence </span><a NAME="E5:156_3_1_1"/>
<font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E7:156_3"><span class="lab"><font color="Green" title="E100">A24</font></span></a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_3_1_2"><span class="kw">suppose </span></a><a NAME="E1:156_3_1_2"/>
 ex <font color="Olive" title="b1">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> ex <font color="Olive" title="b2">T</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a> ex <font color="Olive" title="b3">q</font> being   <a href="trees_4.html#NM1" title="TREES_4:NM.1">Node</a> of <font color="Olive" title="b2">T</font> st <br/>( <font color="Olive" title="b1">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Olive" title="b2">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Olive" title="b1">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Olive" title="b3">q</font> )
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </span><br/><div class="add"><span class="kw">then </span><span class="kw">consider </span><font color="Maroon" title="c16">k</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>, <font color="Maroon" title="c17">Q</font> being   <a href="trees_2.html#NM4" title="TREES_2:NM.4">DecoratedTree</a>, <font color="Maroon" title="c18">q</font> being    <a href="trees_1.html#M1" title="TREES_1:mode.1">Element</a> of  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <font color="Maroon" title="c17">Q</font><span class="kw"> such that </span><br/><a NAME="E3:156_3_1_2"/><span class="lab"><font color="Green" title="E101">A25</font></span>: 
( <font color="Maroon" title="c16">k</font> <a href="xxreal_0.html#NR3" title="XXREAL_0:NR.3">&lt;</a>  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> &amp; <font color="Maroon" title="c17">Q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">&lt;*</a><span class="default"><font color="Maroon" title="c7">M</font>,<font color="Maroon" title="c6">i</font></span><a href="finseq_1.html#K10" title="FINSEQ_1:func.10">*&gt;</a></span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c16">k</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> &amp; <font color="Maroon" title="c15">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="trees_3.html#K14" title="TREES_3:func.14">&lt;*</a><span class="default"><font color="Maroon" title="c16">k</font></span><a href="trees_3.html#K14" title="TREES_3:func.14">*&gt;</a></span> <a href="finseq_1.html#K8" title="FINSEQ_1:func.8">^</a> <font color="Maroon" title="c18">q</font> )
 ;<br/><a NAME="E4:156_3_1_2"/><span class="lab"><font color="Green" title="E102">A26</font></span>: 
( <font color="Maroon" title="c16">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  or <font color="Maroon" title="c16">k</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a>, <a class="txt" href="#E3:156_3_1_2"><span class="lab"><font color="Green" title="E101">A25</font></span></a>, <a class="ref" href="nat_1.html#T23" onmouseover="rs('nat_1/T23')" onmouseout="rh()">NAT_1:23</a></span>;<br/><a NAME="E5:156_3_1_2"/><span class="kw">then </span>
( <font color="Maroon" title="c18">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c10">m</font>,<span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> or <font color="Maroon" title="c18">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a>  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</a> <span class="p1">(<span class="default"><a href="trees_4.html#K1" title="TREES_4:func.1">root-tree</a> <span class="p2"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Maroon" title="c11">j</font>,<font color="Maroon" title="c5">I</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></span>)</span> )
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E3:156_3_1_2"><span class="lab"><font color="Green" title="E101">A25</font></span></a>, <a class="txt" href="#E10:156"><span class="lab"><font color="Green" title="E89">A5</font></span></a>, <a class="txt" href="#E14:156"><span class="lab"><font color="Green" title="E90">A6</font></span></a>, <a class="txt" href="#E5:156"><span class="lab"><font color="Green" title="E87">A3</font></span></a></span>;<br/><a NAME="E6:156_3_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c18">q</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <span class="p1"><a href="tarski.html#K1" title="TARSKI:func.1">{</a><span class="default"><a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a></span><a href="tarski.html#K1" title="TARSKI:func.1">}</a></span>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="trees_4.html#T3" onmouseover="rs('trees_4/T3')" onmouseout="rh()">TREES_4:3</a>, <a class="ref" href="trees_1.html#T29" onmouseover="rs('trees_1/T29')" onmouseout="rh()">TREES_1:29</a></span>;<br/><a NAME="E7:156_3_1_2"/><span class="kw">then </span>
<font color="Maroon" title="c18">q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="tarski.html#D1" onmouseover="rs('tarski/D1')" onmouseout="rh()">TARSKI:def 1</a></span>;<br/><span class="kw">hence </span><a NAME="E8:156_3_1_2"/>
<font color="Maroon" title="c14">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <span class="kw">by</span> <span class="lab"><a class="txt" href="#E7:156_3"><span class="lab"><font color="Green" title="E100">A24</font></span></a>, <a class="txt" href="#E4:156_3_1_2"><span class="lab"><font color="Green" title="E102">A26</font></span></a>, <a class="txt" href="#E16:156"><span class="lab"><font color="Green" title="E91">A7</font></span></a>, <a class="txt" href="#E1:156_3"><span class="lab"><font color="Green" title="E97">A21</font></span></a>, <a class="txt" href="#E2:156_3"><span class="lab"><font color="Green" title="E98">A22</font></span></a>, <a class="txt" href="#E3:156_3_1_2"><span class="lab"><font color="Green" title="E101">A25</font></span></a>, <a class="ref" href="finseq_1.html#T34" onmouseover="rs('finseq_1/T34')" onmouseout="rh()">FINSEQ_1:34</a></span>; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div></div><span class="kw">end;</span></div>

</div><span class="kw">end;</span></div>
<span class="kw">let </span><font color="Maroon" title="c12">a</font> be   <a href="msualg_1.html#NM1" title="MSUALG_1:NM.1">SortSymbol</a> of <font color="Maroon" title="c1">S</font>; <span class="comment"><font color="firebrick">:: according to </font></span><a class="ref" href="pboole.html#D21" onmouseover="rs('pboole/D21')" onmouseout="rh()">PBOOLE:def 21</a> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font></span><br/>

<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_4"><span class="kw">per </span></a><a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="kw">cases </span></a><span class="hide"><a NAME="E1:156_4"/>
( <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> or <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font> or ( <font color="Maroon" title="c12">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> &amp; <font color="Maroon" title="c12">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font> ) )
 </span>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_4_1"><span class="kw">suppose </span></a><a NAME="E1:156_4_1"/><span class="lab"><font color="Green" title="E97">A27</font></span>: 
<font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font></span><br/><div class="add"><span class="kw">thus </span><span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font> = 
<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E21:156"><span class="lab"><font color="Green" title="E94">A10</font></span></a>, <a class="txt" href="#E1:156_4_1"><span class="lab"><font color="Green" title="E97">A27</font></span></a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_4_1"><span class="lab"><font color="Green" title="E97">A27</font></span></a>, <a class="txt" href="#E20:156"><span class="lab"><font color="Green" title="E93">A9</font></span></a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font>
<span class="kw">by</span> <span class="lab"><a class="ref" href="pboole.html#D4" onmouseover="rs('pboole/D4')" onmouseout="rh()">PBOOLE:def 4</a></span>
; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_4_2"><span class="kw">suppose </span></a><a NAME="E1:156_4_2"/><span class="lab"><font color="Green" title="E97">A28</font></span>: 
<font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c5">I</font>
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font></span><br/><div class="add"><span class="kw">hence </span><span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font> = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E22:156"><span class="lab"><font color="Green" title="E95">A15</font></span></a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_4_2"><span class="lab"><font color="Green" title="E97">A28</font></span></a>, <a class="ref" href="aofa_a01.html#T73" target="_self" onmouseover="rs('aofa_a01/T73')" onmouseout="rh()">Th73</a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font>
<span class="kw">by</span> <span class="lab"><a class="ref" href="pboole.html#D4" onmouseover="rs('pboole/D4')" onmouseout="rh()">PBOOLE:def 4</a></span>
;<br/> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="156_4_3"><span class="kw">suppose </span></a><a NAME="E1:156_4_3"/><span class="lab"><font color="Green" title="E97">A29</font></span>: 
( <font color="Maroon" title="c12">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font> &amp; <font color="Maroon" title="c12">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c5">I</font> )
 ; <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c12">a</font></span><br/><div class="add"><span class="kw">hence </span><span class="p1">(<span class="default"><a href="aofa_a00.html#K10" title="AOFA_A00:func.10">vf</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="aofa_a00.html#K38" title="AOFA_A00:func.38">.</a> <span class="p3">(<span class="default"><a href="aofa_a01.html#K4" title="AOFA_A01:func.4">@</a> <font color="Maroon" title="c6">i</font></span>)</span></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font> = 
 <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E23:156"><span class="lab"><font color="Green" title="E96">A20</font></span></a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_4_3"><span class="lab"><font color="Green" title="E97">A29</font></span></a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span> <a href="xboole_0.html#K2" title="XBOOLE_0:func.2">\/</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font></span>)</span>
<span class="kw">by</span> <span class="lab"><a class="txt" href="#E1:156_4_3"><span class="lab"><font color="Green" title="E97">A29</font></span></a>, <a class="ref" href="aofa_a00.html#T6" onmouseover="rs('aofa_a00/T6')" onmouseout="rh()">AOFA_A00:6</a></span>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c5">I</font> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c6">i</font></span>)</span> <a href="pboole.html#K2" title="PBOOLE:func.2">(\/)</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><a href="aofa_a00.html#K36" title="AOFA_A00:func.36">the_array_sort_of</a> <font color="Maroon" title="c1">S</font></span>)</span> <a href="aofa_a00.html#K2" title="AOFA_A00:func.2">-singleton</a> <font color="Maroon" title="c7">M</font></span>)</span></span>)</span> <a href="msafree4.html#K1" title="MSAFREE4:func.1">.</a> <font color="Maroon" title="c12">a</font>
<span class="kw">by</span> <span class="lab"><a class="ref" href="pboole.html#D4" onmouseover="rs('pboole/D4')" onmouseout="rh()">PBOOLE:def 4</a></span>
;<br/> <a class="txt" onmouseover="tooltip.show('hs',this)" onmouseout="tooltip.hide()" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/></div><span class="kw">end;</span></div></div><span class="kw">end;</span></div>

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