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<b>take </b>
 <a href="pcomps_1.html#K1">bool</a> <font color="Maroon">X</font>
;<br/>

<b>thus </b><a NAME="E1:73_1_1"/>
(  <a href="pcomps_1.html#K1">bool</a> <font color="Maroon">X</font> is <a href="prob_3.html#V2" target="_self">non-decreasing-closed</a> &amp;  <a href="pcomps_1.html#K1">bool</a> <font color="Maroon">X</font> is <a href="prob_3.html#V3" target="_self">non-increasing-closed</a> )
 <b>by </b><i><a class="ref" href="prob_3.html#T7" target="_self">Th7</a></i>;<br/>


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