<?xml version="1.0"?>
<div class="add">

<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> ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> for <font color="Olive" title="b1">A</font> being  <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">T</font> holds   <a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</a> <font color="Olive" title="b1">A</font>,2 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b1">A</font> <a href="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> </span>)</span> <a href="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> </span><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>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide">  <a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</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="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> </span>)</span> <a href="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> </span><br/>



 <a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</a> <font color="Maroon" title="c2">A</font>,2 = 
 <a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</a> <font color="Maroon" title="c2">A</font>,<span class="p1">(<span class="default">1 <a href="nat_1.html#K2" title="NAT_1:func.2">+</a> 1</span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</a> <font color="Maroon" title="c2">A</font>,1</span>)</span> <a href="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> 
<b>by </b><i><a class="ref" href="fintopo3.html#D8" target="_self" title="FINTOPO3:def.8">Def8</a></i>
;<br/>
<b>hence </b><a NAME="E2:42"/>
 <a href="fintopo3.html#K9" title="FINTOPO3:func.9">Fdfl</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="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> </span>)</span> <a href="fintopo3.html#K1" title="FINTOPO3:func.1">^d</a> 
 <b>by </b><i><a class="ref" href="fintopo3.html#T40" target="_self" title="FINTOPO3:th.40">Th40</a></i>; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


</div>
