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

<b>let </b><font color="Maroon">p</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="cqc_lang.html#K7">CQC-WFF</a> ;<br/><b>let </b><font color="Maroon">q</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="cqc_lang.html#K7">CQC-WFF</a> ;<br/>



<b>assume </b><a NAME="E1:52"/>
( <font color="Maroon">p</font> is <a href="qc_lang1.html#V3">negative</a> &amp; <font color="Maroon">q</font> <a href="hidden.html#R1">=</a>  <a href="qc_lang1.html#K17">the_argument_of</a> <font color="Maroon">p</font> )
 ;<br/>

<a NAME="E2:52"/><b>then </b>
<font color="Maroon">p</font> <a href="hidden.html#R1">=</a>  <a href="cqc_lang.html#K10">'not'</a> <font color="Maroon">q</font>
 
<b>by </b><i><a class="ref" href="qc_lang1.html#D23">QC_LANG1:def 23</a></i>;<br/>
<b>hence </b><a NAME="E3:52"/>
 <a href="cqc_sim1.html#K14" target="_self">SepVar</a> <font color="Maroon">p</font> <a href="hidden.html#R1">=</a>  <a href="cqc_lang.html#K10">'not'</a> <span class="p1">(<span class="default"><a href="cqc_sim1.html#K14" target="_self">SepVar</a> <font color="Maroon">q</font></span>)</span>
 <b>by </b><i/>;<br/>


</div>
