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<b>let </b><font color="Maroon" title="c1">n</font> be    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> ;<br/><b>let </b><font color="Maroon" title="c2">z1</font>, <font color="Maroon" title="c3">z2</font>, <font color="Maroon" title="c4">z3</font> be    <a href="finseq_2.html#M2" title="FINSEQ_2:mode.2">Element</a> of  <a href="complsp1.html#K8" title="COMPLSP1:func.8">COMPLEX</a> <font color="Maroon" title="c1">n</font>;<br/>







<b>thus </b><font color="Maroon" title="c2">z1</font> <a href="complsp1.html#K13" title="COMPLSP1:func.13">-</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">z2</font> <a href="complsp1.html#K13" title="COMPLSP1:func.13">-</a> <font color="Maroon" title="c4">z3</font></span>)</span> = 
<font color="Maroon" title="c2">z1</font> <a href="complsp1.html#K9" title="COMPLSP1:func.9">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="complsp1.html#K12" title="COMPLSP1:func.12">-</a> <font color="Maroon" title="c3">z2</font></span>)</span> <a href="complsp1.html#K9" title="COMPLSP1:func.9">+</a> <font color="Maroon" title="c4">z3</font></span>)</span>
<b>by </b><i><a class="ref" href="complsp1.html#T42" target="_self" title="COMPLSP1:th.42">Th42</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c2">z1</font> <a href="complsp1.html#K9" title="COMPLSP1:func.9">+</a> <span class="p2">(<span class="default"><a href="complsp1.html#K12" title="COMPLSP1:func.12">-</a> <font color="Maroon" title="c3">z2</font></span>)</span></span>)</span> <a href="complsp1.html#K9" title="COMPLSP1:func.9">+</a> <font color="Maroon" title="c4">z3</font>
<b>by </b><i><a class="ref" href="finseqop.html#T29" title="FINSEQOP:th.29">FINSEQOP:29</a></i>
<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c2">z1</font> <a href="complsp1.html#K13" title="COMPLSP1:func.13">-</a> <font color="Maroon" title="c3">z2</font></span>)</span> <a href="complsp1.html#K9" title="COMPLSP1:func.9">+</a> <font color="Maroon" title="c4">z3</font>

;<br/>


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