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<b>let </b><font color="Maroon">z1</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="complfld.html#K1" target="_self">F_Complex</a> ;<br/><b>let </b><font color="Maroon">z2</font> be   <a href="struct_0.html#NM1">Element</a> of <a href="complfld.html#K1" target="_self">F_Complex</a> ;<br/>



<b>reconsider </b><font color="Maroon">z1'</font> = <font color="Maroon">z1</font>, <font color="Maroon">z2'</font> = <font color="Maroon">z2</font> as    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K2">COMPLEX</a>  <b>by </b><i/>;<br/>
<a NAME="E2:17"/>
 <a href="rlvect_1.html#K5">-</a> <font color="Maroon">z2</font> <a href="hidden.html#R1">=</a>  <a href="binop_2.html#K1">-</a> <font color="Maroon">z2'</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><font color="Maroon">z1</font> <a href="rlvect_1.html#K6">-</a> <span class="p1">(<span class="default"><a href="rlvect_1.html#K5">-</a> <font color="Maroon">z2</font></span>)</span> = 
<font color="Maroon">z1'</font> <a href="binop_2.html#K4">-</a> <span class="p1">(<span class="default"><a href="binop_2.html#K1">-</a> <font color="Maroon">z2'</font></span>)</span>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">z1'</font> <a href="binop_2.html#K3">+</a> <font color="Maroon">z2'</font>

<br/>.= 
<font color="Maroon">z1</font> <a href="rlvect_1.html#K4">+</a> <font color="Maroon">z2</font>
<b>by </b><i/>
;<br/><br/>


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