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

<b>let </b><font color="Maroon" title="c1">X</font> be  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="pre_topc.html#NM1" title="PRE_TOPC:NM.1">TopSpace</a>;<br/><b>let </b><font color="Maroon" title="c2">A1</font>, <font color="Maroon" title="c3">A</font>, <font color="Maroon" title="c4">A2</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c1">X</font>;<br/>







<b>assume </b><a NAME="E1:10"/>
<font color="Maroon" title="c2">A1</font>,<font color="Maroon" title="c3">A</font> <a href="tsep_2.html#R2" title="TSEP_2:pred.2">constitute_a_decomposition</a> 
 ;<br/>

<a NAME="E2:10"/><b>then </b><i><font color="Green" title="E9">A1</font></i>: 
<font color="Maroon" title="c2">A1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">A</font> <a href="subset_1.html#K3" title="SUBSET_1:func.3">`</a> 
 
<b>by </b><i><a class="ref" href="tsep_2.html#T4" target="_self" title="TSEP_2:th.4">Th4</a></i>;<br/>
<b>assume </b><a NAME="E3:10"/>
<font color="Maroon" title="c3">A</font>,<font color="Maroon" title="c4">A2</font> <a href="tsep_2.html#R2" title="TSEP_2:pred.2">constitute_a_decomposition</a> 
 ;<br/>

<b>hence </b><a NAME="E4:10"/>
<font color="Maroon" title="c2">A1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">A2</font>
 <b>by </b><i><a class="txt" href="tsep_2.html#E2:10"><i><font color="Green" title="E9">A1</font></i></a>, <a class="ref" href="tsep_2.html#T4" target="_self" title="TSEP_2:th.4">Th4</a></i>;<br/>


</div>
