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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E53">Th68</font></span>: <a NAME="T68"><span class="comment"><font color="firebrick">:: PROB_3:68</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds <br/> (  <a href="setfam_1.html#K9" title="SETFAM_1:func.9">bool</a> <font color="Olive" title="b1">X</font> is  <a href="prob_3.html#V2" title="PROB_3:attr.2">non-decreasing-closed</a>  &amp;  <a href="setfam_1.html#K9" title="SETFAM_1:func.9">bool</a> <font color="Olive" title="b1">X</font> is  <a href="prob_3.html#V3" title="PROB_3:attr.3">non-increasing-closed</a>  ) ;<br/></div></div>
