<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T85"><span class="comment"><font color="firebrick">:: PBOOLE:85</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">I</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">X</font> being   <a href="pboole.html#NM1" title="PBOOLE:NM.1">ManySortedSet</a> of <font color="Olive" title="b1">I</font> holds  <font color="Olive" title="b2">X</font> <a href="pboole.html#K5" title="PBOOLE:func.5">(\+\)</a> <font color="Olive" title="b2">X</font> <a href="pboole.html#R6" title="PBOOLE:pred.6">=</a>  <a href="pboole.html#K1" title="PBOOLE:func.1">EmptyMS</a> <font color="Olive" title="b1">I</font> <span class="kw">by</span> <span class="lab"><a class="ref" href="pboole.html#T52" target="_self" onmouseover="rs('pboole/T52')" onmouseout="rh()">Th52</a></span>;<br/></div></div>
