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<b>let </b><font color="Maroon">n</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/><b>let </b><font color="Maroon">z</font> be  <a href="xcmplx_0.html#V1">complex</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/><b>let </b><font color="Maroon">v</font> be    <a href="comptrig.html#M1">CRoot</a> of <font color="Maroon">n</font>,<font color="Maroon">z</font>;<br/>





<b>assume </b><a NAME="E1:51"/>
<font color="Maroon">v</font> <a href="hidden.html#R1">=</a> 0
 ;<br/>

<a NAME="E2:51"/><b>then </b>
0 <a href="prepower.html#K3">|^</a> <font color="Maroon">n</font> <a href="hidden.html#R1">=</a> <font color="Maroon">z</font>
 
<b>by </b><i><a class="ref" href="comptrig.html#D2">COMPTRIG:def 2</a></i>;<br/>
<b>hence </b><a NAME="E3:51"/>
<font color="Maroon">z</font> <a href="hidden.html#R1">=</a> 0
 <b>by </b><i/>;<br/>


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