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<b>let </b><font color="Maroon">n</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>let </b><font color="Maroon">z1</font> be    <a href="finseq_2.html#M2">Element</a> of  <a href="complsp1.html#K8" target="_self">COMPLEX</a> <font color="Maroon">n</font>;<br/><b>let </b><font color="Maroon">z</font> be    <a href="finseq_2.html#M2">Element</a> of  <a href="complsp1.html#K8" target="_self">COMPLEX</a> <font color="Maroon">n</font>;<br/><b>let </b><font color="Maroon">z2</font> be    <a href="finseq_2.html#M2">Element</a> of  <a href="complsp1.html#K8" target="_self">COMPLEX</a> <font color="Maroon">n</font>;<br/>







<a NAME="E1:27"/>
( <font color="Maroon">z1</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z2</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> iff <font color="Maroon">z1</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z2</font> )
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:27"/>
( ( <font color="Maroon">z1</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z2</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> or <font color="Maroon">z1</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z</font> <a href="complsp1.html#K9" target="_self">+</a> <font color="Maroon">z2</font> ) implies <font color="Maroon">z1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z2</font> )
 <b>by </b><i/>;<br/>


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