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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E62">Th124</font></span>: <a NAME="T124"><span class="comment"><font color="firebrick">:: PBOOLE:124</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">I</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <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  not <font color="Olive" title="b2">x</font> <a href="pboole.html#R3" title="PBOOLE:pred.3">in</a>  <a href="pboole.html#K1" title="PBOOLE:func.1">EmptyMS</a> <font color="Olive" title="b1">I</font></div></div>
