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<div><span class="kw">theorem </span><a NAME="T6"><span class="comment"><font color="firebrick">:: FIN_TOPO:6</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">FT</font> being   non  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>   <a href="orders_2.html#L1" title="ORDERS_2:struct.1">RelStr</a> <br/>  for <font color="Olive" title="b2">A</font> being   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Olive" title="b1">FT</font> holds  <font color="Olive" title="b2">A</font> <a href="fin_topo.html#K5" title="FIN_TOPO:func.5">^delta</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">A</font> <a href="fin_topo.html#K6" title="FIN_TOPO:func.6">^deltai</a></span>)</span> <a href="subset_1.html#K4" title="SUBSET_1:func.4">\/</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">A</font> <a href="fin_topo.html#K7" title="FIN_TOPO:func.7">^deltao</a></span>)</span></div></div>
