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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E62">Th54</font></span>: <a NAME="T54"><span class="comment"><font color="firebrick">:: AOFA_I00:54</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font> being   <a href="aofa_i00.html#V2" title="AOFA_I00:attr.2">Euclidean</a>  <a href="aofa_000.html#NM1" title="AOFA_000:NM.1">preIfWhileAlgebra</a><br/>  for <font color="Olive" title="b2">X</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="card_3.html#V4" title="CARD_3:attr.4">countable</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b3">T</font> being   <a href="subset_1.html#NM2" title="SUBSET_1:NM.2">Subset</a> of <span class="p1">(<span class="default"><a href="funct_2.html#K9" title="FUNCT_2:func.9">Funcs</a> (<font color="Olive" title="b2">X</font>,<a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>)</span>)</span><br/>  for <font color="Olive" title="b4">f</font> being   <a href="aofa_i00.html#V1" title="AOFA_I00:attr.1">Euclidean</a>   <a href="aofa_000.html#M1" title="AOFA_000:mode.1">ExecutionFunction</a> of <font color="Olive" title="b1">A</font>, <a href="funct_2.html#K9" title="FUNCT_2:func.9">Funcs</a> (<font color="Olive" title="b2">X</font>,<a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>),<font color="Olive" title="b3">T</font><br/>  for <font color="Olive" title="b5">t</font> being    <a href="aofa_i00.html#M3" title="AOFA_I00:mode.3">INT-Expression</a> of <font color="Olive" title="b1">A</font>,<font color="Olive" title="b4">f</font><br/>  for <font color="Olive" title="b6">b</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of <font color="Olive" title="b2">X</font><br/>  for <font color="Olive" title="b7">g</font> being   <a href="aofa_i00.html#V1" title="AOFA_I00:attr.1">Euclidean</a>   <a href="aofa_000.html#M1" title="AOFA_000:mode.1">ExecutionFunction</a> of <font color="Olive" title="b1">A</font>, <a href="funct_2.html#K9" title="FUNCT_2:func.9">Funcs</a> (<font color="Olive" title="b2">X</font>,<a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>),<span class="p1">(<span class="default"><a href="funct_2.html#K9" title="FUNCT_2:func.9">Funcs</a> (<font color="Olive" title="b2">X</font>,<a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>)</span>)</span> <a href="aofa_i00.html#K1" title="AOFA_I00:func.1">\</a> (<font color="Olive" title="b6">b</font>,<a href="numbers.html#K5" title="NUMBERS:func.5">0</a>)<br/>  for <font color="Olive" title="b8">I</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Olive" title="b1">A</font>  st <font color="Olive" title="b8">I</font> <a href="aofa_000.html#R5" title="AOFA_000:pred.5">is_terminating_wrt</a> <font color="Olive" title="b7">g</font> holds <br/> for <font color="Olive" title="b9">i</font>, <font color="Olive" title="b10">n</font> being    <a href="aofa_i00.html#M1" title="AOFA_I00:mode.1">Variable</a> of <font color="Olive" title="b7">g</font>  st  ex <font color="Olive" title="b11">d</font> being   <a href="funct_1.html#NM1" title="FUNCT_1:NM.1">Function</a> st <br/>( <font color="Olive" title="b11">d</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b6">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  &amp; <font color="Olive" title="b11">d</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b10">n</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 &amp; <font color="Olive" title="b11">d</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b9">i</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 2 ) &amp; (  for <font color="Olive" title="b11">s</font> being    <a href="funct_2.html#M2" title="FUNCT_2:mode.2">Element</a> of  <a href="funct_2.html#K9" title="FUNCT_2:func.9">Funcs</a> (<font color="Olive" title="b2">X</font>,<a href="numbers.html#K4" title="NUMBERS:func.4">INT</a>) holds <br/> ( <span class="p1">(<span class="default"><font color="Olive" title="b7">g</font> <a href="binop_1.html#K2" title="BINOP_1:func.2">.</a> (<font color="Olive" title="b11">s</font>,<font color="Olive" title="b8">I</font>)</span>)</span> <a href="aofa_i00.html#K21" title="AOFA_I00:func.21">.</a> <font color="Olive" title="b10">n</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b11">s</font> <a href="aofa_i00.html#K21" title="AOFA_I00:func.21">.</a> <font color="Olive" title="b10">n</font> &amp; <span class="p1">(<span class="default"><font color="Olive" title="b7">g</font> <a href="binop_1.html#K2" title="BINOP_1:func.2">.</a> (<font color="Olive" title="b11">s</font>,<font color="Olive" title="b8">I</font>)</span>)</span> <a href="aofa_i00.html#K21" title="AOFA_I00:func.21">.</a> <font color="Olive" title="b9">i</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b11">s</font> <a href="aofa_i00.html#K21" title="AOFA_I00:func.21">.</a> <font color="Olive" title="b9">i</font> ) ) holds <br/> <a href="aofa_000.html#K17" title="AOFA_000:func.17">for-do</a> (<span class="p1">(<span class="default"><font color="Olive" title="b9">i</font> <a href="aofa_i00.html#K47" title="AOFA_I00:func.47">:=</a> <font color="Olive" title="b5">t</font></span>)</span>,<span class="p1">(<span class="default"><font color="Olive" title="b9">i</font> <a href="aofa_i00.html#K74" title="AOFA_I00:func.74">leq</a> <font color="Olive" title="b10">n</font></span>)</span>,<span class="p1">(<span class="default"><font color="Olive" title="b9">i</font> <a href="aofa_i00.html#K57" title="AOFA_I00:func.57">+=</a> 1</span>)</span>,<font color="Olive" title="b8">I</font>) <a href="aofa_000.html#R5" title="AOFA_000:pred.5">is_terminating_wrt</a> <font color="Olive" title="b7">g</font></div></div>
