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<b>consider </b><font color="Maroon" title="c2">p</font> being   <a href="qc_lang1.html#NM8" title="QC_LANG1:NM.8">QC-formula</a>, <font color="Maroon" title="c3">e</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> <b> such that </b><br/><a NAME="E2:36_2_1"/><i><font color="Green" title="E16">A2</font></i>: 
<font color="Maroon" title="c1">S</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="domain_1.html#K1" title="DOMAIN_1:func.1">[</a><span class="default"><font color="Maroon" title="c2">p</font>,<font color="Maroon" title="c3">e</font></span><a href="domain_1.html#K1" title="DOMAIN_1:func.1">]</a></span>
 <b>by </b><i><a class="ref" href="substut1.html#T8" target="_self" title="SUBSTUT1:th.8">Th8</a></i>;<br/>
<b>thus </b><a NAME="E3:36_2_1"/>
<font color="Maroon" title="c1">S</font> <a href="mcart_1.html#K2" title="MCART_1:func.2">`2</a>  is    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="substut1.html#K1" title="SUBSTUT1:func.1">vSUB</a> 
 <b>by </b><i><a class="txt" href="substut1.html#E2:36_2_1"><i><font color="Green" title="E16">A2</font></i></a>, <a class="ref" href="mcart_1.html#T7" title="MCART_1:th.7">MCART_1:7</a></i>;<br/>


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