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<b>let </b><font color="Maroon" title="c1">z1</font>, <font color="Maroon" title="c2">z</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <a href="complfld.html#K1" title="COMPLFLD:func.1">F_Complex</a> ;<br/>



<b>reconsider </b><font color="Maroon" title="c3">z1'</font> = <font color="Maroon" title="c1">z1</font>, <font color="Maroon" title="c4">z'</font> = <font color="Maroon" title="c2">z</font> as    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#K2" title="NUMBERS:func.2">COMPLEX</a>  <b>by </b><i><a class="ref" href="complfld.html#D1" target="_self" title="COMPLFLD:def.1">Def1</a></i>;<br/>
<b>thus </b><span class="p1">(<span class="default"><font color="Maroon" title="c1">z1</font> <a href="rlvect_1.html#K3" title="RLVECT_1:func.3">+</a> <font color="Maroon" title="c2">z</font></span>)</span> <a href="rlvect_1.html#K5" title="RLVECT_1:func.5">-</a> <font color="Maroon" title="c2">z</font> = 
<span class="p1">(<span class="default"><font color="Maroon" title="c3">z1'</font> <a href="binop_2.html#K3" title="BINOP_2:func.3">+</a> <font color="Maroon" title="c4">z'</font></span>)</span> <a href="binop_2.html#K4" title="BINOP_2:func.4">-</a> <font color="Maroon" title="c4">z'</font>
<b>by </b><i><a class="ref" href="complfld.html#T5" target="_self" title="COMPLFLD:th.5">Th5</a></i>
<br/>.= 
<font color="Maroon" title="c1">z1</font>

;<br/>


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