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<b>let </b><font color="Maroon">I</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">M</font> be    <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">I</font>;<br/><b>let </b><font color="Maroon">P</font> be   <a href="closure1.html#NM1">MSSetOp</a> of <font color="Maroon">M</font>;<br/><b>let </b><font color="Maroon">E</font> be    <a href="pboole.html#M2">Element</a> of  <a href="mssubfam.html#K7">bool</a> <font color="Maroon">M</font>;<br/>







<b>assume </b><a NAME="E1:25"/><i><font color="Green">E34</font></i>: 
<font color="Maroon">E</font> <a href="pboole.html#R6">=</a> <font color="Maroon">M</font>
 ;<br/>

<b>assume </b><a NAME="E2:25"/>
<font color="Maroon">P</font> is <a href="closure1.html#V1" target="_self">reflexive</a>
 ;<br/>

<b>hence </b><a NAME="E3:25"/>
<font color="Maroon">E</font> <a href="pboole.html#R2">c=</a> <font color="Maroon">P</font> <a href="closure1.html#K3" target="_self">..</a> <font color="Maroon">E</font>
 <b>by </b><i/>; <i><font color="Red">:: according to </font></i><a class="ref" href="pboole.html#D13">PBOOLE:def 13</a><br/>

<a NAME="E4:25"/>
<font color="Maroon">P</font> <a href="closure1.html#K3" target="_self">..</a> <font color="Maroon">E</font> <a href="pboole.html#R1">in</a>  <a href="mssubfam.html#K7">bool</a> <font color="Maroon">E</font>
 
<b>by </b><i>, <a class="ref" href="mssubfam.html#T12">MSSUBFAM:12</a></i>;<br/>
<b>hence </b><a NAME="E5:25"/>
<font color="Maroon">P</font> <a href="closure1.html#K3" target="_self">..</a> <font color="Maroon">E</font> <a href="pboole.html#R2">c=</a> <font color="Maroon">E</font>
 <b>by </b><i><a class="ref" href="mboolean.html#T19">MBOOLEAN:19</a></i>;<br/>


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