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<b>let </b><font color="Maroon" title="c1">p</font> be    <a href="subset_1.html#M2" title="SUBSET_1:mode.2">Element</a> of  <a href="cqc_lang.html#K7" title="CQC_LANG:func.7">CQC-WFF</a> ;<br/>

<a NAME="E1:69"/>
 <a href="qc_lang1.html#K23" title="QC_LANG1:func.23">still_not-bound_in</a> <font color="Maroon" title="c1">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="qc_lang1.html#K23" title="QC_LANG1:func.23">still_not-bound_in</a> <span class="p1">(<span class="default"><a href="cqc_sim1.html#K14" title="CQC_SIM1:func.14">SepVar</a> <font color="Maroon" title="c1">p</font></span>)</span>
 
<b>by </b><i><a class="ref" href="cqc_sim1.html#T45" target="_self" title="CQC_SIM1:th.45">Th45</a></i>;<br/>
<a NAME="E2:69"/><b>then </b>
 <a href="cqc_sim1.html#K11" title="CQC_SIM1:func.11">NBI</a> <font color="Maroon" title="c1">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cqc_sim1.html#K11" title="CQC_SIM1:func.11">NBI</a> <span class="p1">(<span class="default"><a href="cqc_sim1.html#K14" title="CQC_SIM1:func.14">SepVar</a> <font color="Maroon" title="c1">p</font></span>)</span>
 
;<br/>
<b>hence </b><a NAME="E3:69"/>
 <a href="cqc_sim1.html#K12" title="CQC_SIM1:func.12">index</a> <font color="Maroon" title="c1">p</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="cqc_sim1.html#K12" title="CQC_SIM1:func.12">index</a> <span class="p1">(<span class="default"><a href="cqc_sim1.html#K14" title="CQC_SIM1:func.14">SepVar</a> <font color="Maroon" title="c1">p</font></span>)</span>
 ;<br/>


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