<?xml version="1.0"?>
<div>:: <span class="kw">deftheorem </span>   defines <a href="classes5.html#R1" title="CLASSES5:pred.1">~=</a> <a onclick="hs(this)" href="javascript:()">CLASSES5:def 31 : <br/></a><span> for <font color="Olive" title="b1">C</font>, <font color="Olive" title="b2">D</font> being   <a href="classes5.html#NM3" title="CLASSES5:NM.3">CategorySet</a> holds <br/> ( <font color="Olive" title="b1">C</font> <a href="classes5.html#R1" title="CLASSES5:pred.1">~=</a> <font color="Olive" title="b2">D</font> iff  <a href="classes5.html#K19" title="CLASSES5:func.19">SetToCat</a> <font color="Olive" title="b1">C</font> <a href="isocat_1.html#NR2" title="ISOCAT_1:NR.2">~=</a>  <a href="classes5.html#K19" title="CLASSES5:func.19">SetToCat</a> <font color="Olive" title="b2">D</font> );<br/></span></div>
