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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="sublemma.html#V1" target="_self">CQC-WFF-like</a>  <a href="subset_1.html#M1">Element</a> of <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><a href="substut1.html#K16">QC-Sub-WFF</a> ,<a href="qc_lang1.html#K2">bound_QC-variables</a> </span><a href="zfmisc_1.html#K2">:]</a></span>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be    <a href="substut1.html#M1">second_Q_comp</a> of <font color="Maroon">c<sub>1</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>3</sub></font> be    <a href="subset_1.html#M1">Element</a> of <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><a href="substut1.html#K16">QC-Sub-WFF</a> ,<a href="qc_lang1.html#K2">bound_QC-variables</a> </span><a href="zfmisc_1.html#K2">:]</a></span>;<br/><b>let </b><font color="Maroon">c<sub>4</sub></font> be    <a href="substut1.html#M1">second_Q_comp</a> of <font color="Maroon">c<sub>3</sub></font>;<br/>







<b>assume </b><a NAME="E1:51"/><i><font color="Green">E39</font></i>: 
( <font color="Maroon">c<sub>1</sub></font> is <a href="substut1.html#V3">quantifiable</a> &amp; <font color="Maroon">c<sub>3</sub></font> is <a href="substut1.html#V3">quantifiable</a> &amp;  <a href="sublemma.html#K10" target="_self">CQCSub_All</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="substut1.html#K24">Sub_All</a> <font color="Maroon">c<sub>3</sub></font>,<font color="Maroon">c<sub>4</sub></font> )
 ;<br/>

<a NAME="E2:51"/><b>then </b>
 <a href="substut1.html#K24">Sub_All</a> <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="substut1.html#K24">Sub_All</a> <font color="Maroon">c<sub>3</sub></font>,<font color="Maroon">c<sub>4</sub></font>
 
<b>by </b><i><a class="ref" href="sublemma.html#D6" target="_self">Def6</a></i>;<br/>
<b>hence </b><a NAME="E3:51"/>
( <font color="Maroon">c<sub>1</sub></font> <a href="substut1.html#K23">`2</a>  <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>3</sub></font> <a href="substut1.html#K23">`2</a>  &amp; <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>4</sub></font> )
 <b>by </b><i><a class="txt" href="sublemma.html#E1:51"><i><font color="Green">E39</font></i></a>, <a class="ref" href="sublemma.html#T36" target="_self">Th36</a></i>;<br/>


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