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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/>

<font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> 2 = 
<font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> <span class="p1">(<span class="default">1 <a href="nat_1.html#K1">+</a> 1</span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> 1</span>)</span> <a href="nat_1.html#K2">*</a> <span class="p1">(<span class="default"><font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> 1</span>)</span>
<b>by </b><i><a class="ref" href="newton.html#T13">NEWTON:13</a></i>
<br/>.= 
<font color="Maroon">n</font> <a href="nat_1.html#K2">*</a> <span class="p1">(<span class="default"><font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> 1</span>)</span>
<b>by </b><i><a class="ref" href="newton.html#T10">NEWTON:10</a></i>
<br/>.= 
<font color="Maroon">n</font> <a href="pepin.html#K1" target="_self">^2</a> 
<b>by </b><i><a class="ref" href="newton.html#T10">NEWTON:10</a></i>
;<br/>
<b>hence </b><a NAME="E2:36"/>
<font color="Maroon">n</font> <a href="wsierp_1.html#K2">|^</a> 2 <a href="hidden.html#R1">=</a> <font color="Maroon">n</font> <a href="pepin.html#K1" target="_self">^2</a> 
 ;<br/>


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