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<b>let </b><font color="Maroon">x</font> be    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K2">COMPLEX</a> ;<br/>

<b>reconsider </b><font color="Maroon">x'</font> = <font color="Maroon">x</font> as    <a href="finseq_2.html#M2">Element</a> of <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">x</font></span>)</span> <a href="finseq_2.html#K4">-tuples_on</a> <a href="numbers.html#K2">COMPLEX</a>  <b>by </b><i><a class="ref" href="finseq_2.html#T110">FINSEQ_2:110</a></i>;<br/>
<font color="Maroon">x</font> <a href="complsp1.html#K3">+</a> <span class="p1">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">x</font></span>)</span> = 
<a href="binop_2.html#K27">addcomplex</a>  <a href="finseqop.html#K1">.:</a> <font color="Maroon">x</font>,<span class="p1">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i><a class="ref" href="complsp1.html#D7">COMPLSP1:def 7</a></i>
<br/>.= 
<a href="binop_2.html#K27">addcomplex</a>  <a href="finseqop.html#K1">.:</a> <font color="Maroon">x</font>,<span class="p1">(<span class="default"><a href="binop_2.html#K25">compcomplex</a>  <a href="finseqop.html#K5">*</a> <font color="Maroon">x</font></span>)</span>
<b>by </b><i><a class="ref" href="complsp1.html#D9">COMPLSP1:def 9</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">x'</font></span>)</span> <a href="complsp2.html#K9" target="_self">|-&gt;</a> <a href="complex1.html#K5">0c</a> 
<b>by </b><i><a class="ref" href="complsp1.html#T7">COMPLSP1:7</a>, <a class="ref" href="complsp1.html#T8">COMPLSP1:8</a>, <a class="ref" href="binop_2.html#T1">BINOP_2:1</a>, <a class="ref" href="finseqop.html#T77">FINSEQOP:77</a></i>
<br/>.= 
 <a href="complsp1.html#K11">0c</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">x'</font></span>)</span>
<b>by </b><i><a class="ref" href="complsp1.html#D13">COMPLSP1:def 13</a></i>
;<br/>
<b>hence </b><a NAME="E3:43"/>
<font color="Maroon">x</font> <a href="complsp1.html#K3">+</a> <span class="p1">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">x</font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="complsp1.html#K11">0c</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">x</font></span>)</span>
 ;<br/>


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