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<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> be    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K2">COMPLEX</a> ;<br/>

<b>assume </b><a NAME="E1:81"/><i><font color="Green">E70</font></i>: 
(  <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>2</sub></font> &amp;  <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>3</sub></font> )
 ;<br/>

<a NAME="E2:81"/><i><font color="Green">E71</font></i>: 
 <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="hidden.html#R1">=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">c<sub>2</sub></font>
 
<b>by </b><i><a class="ref" href="complsp2.html#T5" target="_self">Th5</a></i>;<br/>
<span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="complsp1.html#K4">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span> = 
<span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="complsp1.html#K3">+</a> <span class="p3">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span></span>)</span>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span>
<b>by </b><i><a class="txt" href="complsp2.html#E1:81"><i><font color="Green">E70</font></i></a>, <a class="ref" href="complsp2.html#T10" target="_self">Th10</a></i>
<br/>.= 
<span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span> <a href="binop_2.html#K3">+</a> <span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><span class="p2">(<span class="default"><a href="complsp1.html#K5">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span>
<b>by </b><i><a class="txt" href="complsp2.html#E1:81"><i><font color="Green">E70</font></i></a>, <a class="txt" href="complsp2.html#E2:81"><i><font color="Green">E71</font></i></a>, <a class="ref" href="complsp2.html#T66" target="_self">Th66</a></i>
<br/>.= 
<span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span> <a href="binop_2.html#K3">+</a> <span class="p1">(<span class="default"><a href="binop_2.html#K1">-</a> <span class="p2"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span></span>)</span>
<b>by </b><i><a class="txt" href="complsp2.html#E1:81"><i><font color="Green">E70</font></i></a>, <a class="ref" href="complsp2.html#T67" target="_self">Th67</a></i>
;<br/>
<b>hence </b><a NAME="E4:81"/>
<span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="complsp1.html#K4">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span> <a href="hidden.html#R1">=</a> <span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span> <a href="binop_2.html#K4">-</a> <span class="p1"><a href="complsp2.html#K8" target="_self">|(</a><span class="default"><font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font></span><a href="complsp2.html#K8" target="_self">)|</a></span>
 ;<br/>


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