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<b>let </b><font color="Maroon">c<sub>1</sub></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="E1:50"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="qc_lang1.html#V2">atomic</a>
 ;<br/>

<a NAME="E2:50"/><b>then </b>
ex <font color="Olive">b<sub>1</sub></font> being   <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ex <font color="Olive">b<sub>2</sub></font> being  <a href="qc_lang1.html#NM6">QC-pred_symbol</a> of <font color="Olive">b<sub>1</sub></font>ex <font color="Olive">b<sub>3</sub></font> being  <a href="cqc_lang.html#NM2">CQC-variable_list</a> of <font color="Olive">b<sub>1</sub></font> st <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>2</sub></font> <a href="cqc_lang.html#K8">!</a> <font color="Olive">b<sub>3</sub></font>
 
<b>by </b><i><a class="ref" href="cqc_sim1.html#T5" target="_self">Th5</a></i>;<br/>
<b>hence </b><a NAME="E3:50"/>
 <a href="cqc_sim1.html#K14" target="_self">SepVar</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="cqc_sim1.html#T27" target="_self">Th27</a></i>;<br/>


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