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<b>let </b><font color="Maroon">X</font> be  non <a href="xboole_0.html#V1">empty</a> <a href="compts_1.html#V6">compact</a> <a href="struct_0.html#NM2">Subset</a> of <span class="p1">(<span class="default"><a href="euclid.html#K15">TOP-REAL</a> 2</span>)</span>;<br/>

<b>assume </b><a NAME="E1:132"/>
 <a href="pscomp_1.html#K27" target="_self">W-min</a> <font color="Maroon">X</font> <a href="hidden.html#R1">=</a>  <a href="pscomp_1.html#K28" target="_self">W-max</a> <font color="Maroon">X</font>
 ;<br/>

<a NAME="E2:132"/><b>then </b>
 <a href="pscomp_1.html#K23" target="_self">W-most</a> <font color="Maroon">X</font> <a href="tarski.html#R1">c=</a>  <a href="topreal1.html#K3">LSeg</a> <span class="p1">(<span class="default"><a href="pscomp_1.html#K27" target="_self">W-min</a> <font color="Maroon">X</font></span>)</span>,<span class="p1">(<span class="default"><a href="pscomp_1.html#K27" target="_self">W-min</a> <font color="Maroon">X</font></span>)</span>
 
<b>by </b><i><a class="ref" href="pscomp_1.html#D5" target="_self">Def5</a></i>;<br/>
<a NAME="E3:132"/><b>then </b>
 <a href="pscomp_1.html#K23" target="_self">W-most</a> <font color="Maroon">X</font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><span class="p2">(<span class="default"><a href="pscomp_1.html#K27" target="_self">W-min</a> <font color="Maroon">X</font></span>)</span></span><a href="tarski.html#K1">}</a></span>
 
<b>by </b><i><a class="ref" href="topreal1.html#T7">TOPREAL1:7</a></i>;<br/>
<b>hence </b><a NAME="E4:132"/>
 <a href="pscomp_1.html#K23" target="_self">W-most</a> <font color="Maroon">X</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><span class="p2">(<span class="default"><a href="pscomp_1.html#K27" target="_self">W-min</a> <font color="Maroon">X</font></span>)</span></span><a href="tarski.html#K1">}</a></span>
 <b>by </b><i><a class="ref" href="zfmisc_1.html#T39">ZFMISC_1:39</a></i>;<br/>


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