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<b>let </b><font color="Maroon">i</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">n</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>



<b>assume </b><a NAME="E1:21"/>
<font color="Maroon">i</font> <a href="idea_1.html#R1" target="_self">is_expressible_by</a> <font color="Maroon">n</font>
 ;<br/>

<a NAME="E2:21"/><b>then </b><i><font color="Green">E33</font></i>: 
<font color="Maroon">i</font> <a href="xxreal_0.html#NR3" target="_self">&lt;</a> 2 <a href="series_1.html#K3">to_power</a> <font color="Maroon">n</font>
 
<b>by </b><i/>;<br/>
<b>thus </b><a NAME="E3:21"/>
 <a href="idea_1.html#K4" target="_self">ADD_MOD</a> 0,<font color="Maroon">i</font>,<font color="Maroon">n</font> <a href="hidden.html#R1">=</a> <font color="Maroon">i</font>
 <b>by </b><i>, <a class="ref" href="nat_1.html#T76">NAT_1:76</a></i>;<br/>


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