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<b>reconsider </b><font color="Maroon">c<sub>4</sub></font> = <font color="Maroon">c<sub>2</sub></font> as    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="qc_lang1.html#K2">bound_QC-variables</a>  <b>by </b><i><a class="txt" href="cqc_sim1.html#E19"><i><font color="Green">Lemma16</font></i></a></i>;<br/>
<b>reconsider </b><font color="Maroon">c<sub>5</sub></font> = <font color="Maroon">c<sub>3</sub></font> <a href="partfun1.html#K1">*</a> <font color="Maroon">c<sub>4</sub></font> as    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="qc_lang1.html#K2">bound_QC-variables</a>  <b>by </b><i><a class="ref" href="finseq_2.html#T36">FINSEQ_2:36</a></i>;<br/>
 <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>5</sub></font> = 
 <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>4</sub></font>
<b>by </b><i><a class="ref" href="finseq_2.html#T37">FINSEQ_2:37</a></i>
<br/>.= 
<font color="Maroon">c<sub>1</sub></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="E4:23_1_1"/>
<font color="Maroon">c<sub>2</sub></font> <a href="relat_1.html#K5">*</a> <font color="Maroon">c<sub>3</sub></font> is   <a href="cqc_lang.html#NM2">CQC-variable_list</a> of <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="cqc_sim1.html#E18"><i><font color="Green">Lemma15</font></i></a></i>;<br/>


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