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

<b>let </b><font color="Maroon" title="c1">p</font>, <font color="Maroon" title="c2">q</font> be    <a href="subset_1.html#M2" title="SUBSET_1:mode.2">Element</a> of  <a href="cqc_lang.html#K4" title="CQC_LANG:func.4">CQC-WFF</a> ;<br/><b>let </b><font color="Maroon" title="c3">x</font>, <font color="Maroon" title="c4">y</font> be   <a href="qc_lang1.html#NM3" title="QC_LANG1:NM.3">bound_QC-variable</a>;<br/>







<b>assume </b><a NAME="E1:43"/><i><font color="Green" title="E36">A1</font></i>: 
<font color="Maroon" title="c1">p</font> <a href="cqc_the3.html#R5" title="CQC_THE3:pred.5">|-|</a> <font color="Maroon" title="c2">q</font>
 ;<br/>

<a NAME="E2:43"/>
 <a href="cqc_lang.html#K12" title="CQC_LANG:func.12">All</a> <font color="Maroon" title="c3">x</font>,<font color="Maroon" title="c1">p</font> <a href="cqc_the3.html#R5" title="CQC_THE3:pred.5">|-|</a> <font color="Maroon" title="c1">p</font>
 
<b>by </b><i><a class="ref" href="cqc_the3.html#T36" target="_self" title="CQC_THE3:th.36">Th36</a></i>;<br/>
<a NAME="E3:43"/><b>then </b><i><font color="Green" title="E37">A2</font></i>: 
 <a href="cqc_lang.html#K12" title="CQC_LANG:func.12">All</a> <font color="Maroon" title="c3">x</font>,<font color="Maroon" title="c1">p</font> <a href="cqc_the3.html#R5" title="CQC_THE3:pred.5">|-|</a> <font color="Maroon" title="c2">q</font>
 
<b>by </b><i><a class="txt" href="cqc_the3.html#E1:43"><i><font color="Green" title="E36">A1</font></i></a>, <a class="ref" href="cqc_the3.html#T28" target="_self" title="CQC_THE3:th.28">Th28</a></i>;<br/>
<a NAME="E4:43"/>
<font color="Maroon" title="c2">q</font> <a href="cqc_the3.html#R5" title="CQC_THE3:pred.5">|-|</a>  <a href="cqc_lang.html#K12" title="CQC_LANG:func.12">All</a> <font color="Maroon" title="c4">y</font>,<font color="Maroon" title="c2">q</font>
 
<b>by </b><i><a class="ref" href="cqc_the3.html#T36" target="_self" title="CQC_THE3:th.36">Th36</a></i>;<br/>
<b>hence </b><a NAME="E5:43"/>
 <a href="cqc_lang.html#K12" title="CQC_LANG:func.12">All</a> <font color="Maroon" title="c3">x</font>,<font color="Maroon" title="c1">p</font> <a href="cqc_the3.html#R5" title="CQC_THE3:pred.5">|-|</a>  <a href="cqc_lang.html#K12" title="CQC_LANG:func.12">All</a> <font color="Maroon" title="c4">y</font>,<font color="Maroon" title="c2">q</font>
 <b>by </b><i><a class="txt" href="cqc_the3.html#E3:43"><i><font color="Green" title="E37">A2</font></i></a>, <a class="ref" href="cqc_the3.html#T28" target="_self" title="CQC_THE3:th.28">Th28</a></i>;<br/>


</div>
