<?xml version="1.0"?>
<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E16">Th9</font></span>: <a NAME="T9"><span class="comment"><font color="firebrick">:: NEWTON02:9</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">t</font>, <font color="Olive" title="b2">z</font> being   <a href="int_1.html#NM1" title="INT_1:NM.1">Integer</a> holds <br/> ( <font color="Olive" title="b1">t</font> <a href="int_2.html#K3" title="INT_2:func.3">gcd</a> <font color="Olive" title="b2">z</font> is  <a href="abian.html#V1" title="ABIAN:attr.1">even</a>  iff ( <font color="Olive" title="b1">t</font> is  <a href="abian.html#V1" title="ABIAN:attr.1">even</a>  &amp; <font color="Olive" title="b2">z</font> is  <a href="abian.html#V1" title="ABIAN:attr.1">even</a>  ) )</div></div>
