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<b>let </b><font color="Maroon" title="c1">T</font> be  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/><b>let </b><font color="Maroon" title="c2">A</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">T</font>;<br/>



 <a href="fintopo3.html#K7" title="FINTOPO3:func.7">Finf</a> <font color="Maroon" title="c2">A</font>,2 = 
 <a href="fintopo3.html#K7" title="FINTOPO3:func.7">Finf</a> <font color="Maroon" title="c2">A</font>,<span class="p1">(<span class="default">1 <a href="nat_1.html#K1" title="NAT_1:func.1">+</a> 1</span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><a href="fintopo3.html#K7" title="FINTOPO3:func.7">Finf</a> <font color="Maroon" title="c2">A</font>,1</span>)</span> <a href="fin_topo.html#K12" title="FIN_TOPO:func.12">^f</a> 
<b>by </b><i><a class="ref" href="fintopo3.html#D6" target="_self" title="FINTOPO3:def.6">Def6</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c2">A</font> <a href="fin_topo.html#K12" title="FIN_TOPO:func.12">^f</a> </span>)</span> <a href="fin_topo.html#K12" title="FIN_TOPO:func.12">^f</a> 
<b>by </b><i><a class="ref" href="fintopo3.html#T33" target="_self" title="FINTOPO3:th.33">Th33</a></i>
;<br/>
<b>hence </b><a NAME="E2:37"/>
 <a href="fintopo3.html#K7" title="FINTOPO3:func.7">Finf</a> <font color="Maroon" title="c2">A</font>,2 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c2">A</font> <a href="fin_topo.html#K12" title="FIN_TOPO:func.12">^f</a> </span>)</span> <a href="fin_topo.html#K12" title="FIN_TOPO:func.12">^f</a> 
 ;<br/>


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