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<b>set </b><font color="Maroon">FV</font> = <span class="p1">{<span class="default"> <span class="p2"><a href="tarski.html#K4">[</a><span class="default"><font color="Olive">t</font>,<font color="Olive">Y</font></span><a href="tarski.html#K4">]</a></span> where <font color="Olive">t</font> is    <a href="subset_1.html#M1">Element</a> of  <a href="coh_sp.html#K16" target="_self">Toler_on_subsets</a> <font color="Maroon">X</font>, <font color="Olive">Y</font> is   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> : <font color="Olive">t</font> is   <a href="eqrel_1.html#NM1">Tolerance</a> of <font color="Olive">Y</font> </span>}</span> ;<br/>
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="55_1_1_1"><b>now </b></a><div class="add"><b>reconsider </b><font color="Maroon">e</font> =  <a href="xboole_0.html#K1">{}</a>  as    <a href="subset_1.html#M1">Element</a> of  <a href="coh_sp.html#K16" target="_self">Toler_on_subsets</a> <font color="Maroon">X</font> <b>by </b><i/>;<br/><b>reconsider </b><font color="Maroon">o</font> =  <a href="xboole_0.html#K1">{}</a>  as   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> <b>by </b><i><a class="ref" href="xboole_1.html#T2">XBOOLE_1:2</a></i>;<br/><b>take </b><font color="Maroon">m</font> = <span class="p1"><a href="tarski.html#K4">[</a><span class="default"><font color="Maroon">e</font>,<font color="Maroon">o</font></span><a href="tarski.html#K4">]</a></span>;<br/><b>thus </b><a NAME="E3:55_1_1_1"/>
<font color="Maroon">m</font> <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <span class="p2"><a href="tarski.html#K4">[</a><span class="default"><font color="Olive">t</font>,<font color="Olive">Y</font></span><a href="tarski.html#K4">]</a></span> where <font color="Olive">t</font> is    <a href="subset_1.html#M1">Element</a> of  <a href="coh_sp.html#K16" target="_self">Toler_on_subsets</a> <font color="Maroon">X</font>, <font color="Olive">Y</font> is   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">X</font> : <font color="Olive">t</font> is   <a href="eqrel_1.html#NM1">Tolerance</a> of <font color="Olive">Y</font> </span>}</span> 
 <b>by </b><i><a class="ref" href="toler_1.html#T39">TOLER_1:39</a></i>;<br/></div><b>end;</b></div>
<b>hence </b><a NAME="E2:55_1_1"/>
not  <a href="coh_sp.html#K17" target="_self">TOL</a> <font color="Maroon">X</font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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