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<b>let </b><font color="Maroon">e</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="substut1.html#K1" target="_self">vSUB</a> ;<br/><b>let </b><font color="Maroon">k</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>let </b><font color="Maroon">P</font> be   <a href="qc_lang1.html#NM6">QC-pred_symbol</a> of <font color="Maroon">k</font>;<br/><b>let </b><font color="Maroon">ll</font> be    <a href="qc_lang1.html#M1">QC-variable_list</a> of <font color="Maroon">k</font>;<br/>







<b>set </b><font color="Maroon">QCP</font> = <span class="p1">{<span class="default"> <font color="Olive">QP</font> where <font color="Olive">QP</font> is   <a href="qc_lang1.html#NM2">QC-pred_symbol</a> :  <a href="qc_lang1.html#K6">the_arity_of</a> <font color="Olive">QP</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> </span>}</span> ;<br/>
<a NAME="E1:34"/>
<span class="p1">{<span class="default"> <font color="Olive">QP</font> where <font color="Olive">QP</font> is   <a href="qc_lang1.html#NM2">QC-pred_symbol</a> :  <a href="qc_lang1.html#K6">the_arity_of</a> <font color="Olive">QP</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> </span>}</span>  <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> <a href="qc_lang1.html#K7">-ary_QC-pred_symbols</a> 
 
<b>by </b><i><a class="ref" href="qc_lang1.html#D7">QC_LANG1:def 7</a></i>;<br/>
<a NAME="E2:34"/><b>then </b>
<font color="Maroon">P</font> <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <font color="Olive">QP</font> where <font color="Olive">QP</font> is   <a href="qc_lang1.html#NM2">QC-pred_symbol</a> :  <a href="qc_lang1.html#K6">the_arity_of</a> <font color="Olive">QP</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> </span>}</span> 
 
;<br/>
<a NAME="E3:34"/><b>then </b>
 ex <font color="Olive">Q</font> being  <a href="qc_lang1.html#NM2">QC-pred_symbol</a> st <br/>( <font color="Maroon">P</font> <a href="hidden.html#R1">=</a> <font color="Olive">Q</font> &amp;  <a href="qc_lang1.html#K6">the_arity_of</a> <font color="Olive">Q</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> )
 
;<br/>
<a NAME="E4:34"/><b>then </b>
(  <a href="finseq_1.html#K3">len</a> <font color="Maroon">ll</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> &amp;  <a href="qc_lang1.html#K6">the_arity_of</a> <font color="Maroon">P</font> <a href="hidden.html#R1">=</a> <font color="Maroon">k</font> )
 
<b>by </b><i><a class="ref" href="qc_lang1.html#D8">QC_LANG1:def 8</a></i>;<br/>
<b>hence </b><a NAME="E5:34"/>
 <a href="substut1.html#K17" target="_self">Sub_P</a> <font color="Maroon">P</font>,<font color="Maroon">ll</font>,<font color="Maroon">e</font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="domain_1.html#K1">[</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">P</font> <a href="qc_lang1.html#K9">!</a> <font color="Maroon">ll</font></span>)</span>,<font color="Maroon">e</font></span><a href="domain_1.html#K1">]</a></span>
 <b>by </b><i/>;<br/>


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