<?xml version="1.0"?>
<div>:: <span class="kw">deftheorem </span><span class="lab"><font color="Green" title="E2">Def2</font></span>   defines <a href="heyting1.html#K1" title="HEYTING1:func.1">[</a> <a onclick="hs(this)" href="javascript:()">HEYTING1:def 2 : <br/></a><span> for <font color="Olive" title="b1">A</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>   st  not <font color="Olive" title="b1">A</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  holds <br/><span class="p1"><a href="heyting1.html#K1" title="HEYTING1:func.1">[</a><span class="default"><font color="Olive" title="b1">A</font></span><a href="heyting1.html#K1" title="HEYTING1:func.1">]</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">A</font>;<br/></span></div>
