<?xml version="1.0"?>
<div class="add">

<b>thus </b> <a href="finsub_1.html#K5">Fin</a> <span class="p1">(<span class="default"><a href="normform.html#K7">DISJOINT_PAIRS</a> <a href="xboole_0.html#K1">{}</a> </span>)</span> = 
 <a href="zfmisc_1.html#K1">bool</a> <span class="p1">(<span class="default"><a href="normform.html#K7">DISJOINT_PAIRS</a> <a href="xboole_0.html#K1">{}</a> </span>)</span>
<b>by </b><i><a class="ref" href="heyting1.html#T21" target="_self">Th21</a>, <a class="ref" href="finsub_1.html#T27">FINSUB_1:27</a></i>
<br/>.= 
<span class="p1"><a href="tarski.html#K2">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> ,<span class="p2"><a href="tarski.html#K1">{</a><span class="default"><span class="p3"><a href="tarski.html#K4">[</a><span class="default"><a href="xboole_0.html#K1">{}</a> ,<a href="xboole_0.html#K1">{}</a> </span><a href="tarski.html#K4">]</a></span></span><a href="tarski.html#K1">}</a></span></span><a href="tarski.html#K2">}</a></span>
<b>by </b><i><a class="ref" href="heyting1.html#T21" target="_self">Th21</a>, <a class="ref" href="zfmisc_1.html#T30">ZFMISC_1:30</a></i>
;<br/>


</div>
