<?xml version="1.0"?>
<div>:: <span class="kw">deftheorem </span>   defines <a href="classes5.html#V3" title="CLASSES5:attr.3">-Class</a> <a onclick="hs(this)" href="javascript:()">CLASSES5:def 10 : <br/></a><span> for <font color="Olive" title="b1">U</font> being   <a href="classes2.html#NM1" title="CLASSES2:NM.1">Universe</a><br/>  for <font color="Olive" title="b2">x</font> being    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a>  holds <br/> ( <font color="Olive" title="b2">x</font> is <font color="Olive" title="b1">U</font> <a href="classes5.html#V3" title="CLASSES5:attr.3">-Class</a>  iff ( <font color="Olive" title="b2">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="zfmisc_1.html#K1" title="ZFMISC_1:func.1">bool</a> <font color="Olive" title="b1">U</font> &amp;  not <font color="Olive" title="b2">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Olive" title="b1">U</font> ) );<br/></span></div>
