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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  non <a href="int_2.html#V1">prime</a> <a href="nat_1.html#NM1">Nat</a>;<br/>

<b>assume </b><a NAME="E1:8"/>
<font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> 1
 ;<br/>

<b>then consider </b><font color="Maroon">c<sub>2</sub></font> being   <a href="newton.html#NM1">Prime</a><b> such that </b><br/><a NAME="E3:8"/><i><font color="Green">E5</font></i>: 
<font color="Maroon">c<sub>2</sub></font> <a href="nat_1.html#R1">divides</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="moebius1.html#E5"><i><font color="Green">Lemma3</font></i></a></i>;<br/>
<b>thus </b><a NAME="E4:8"/>
ex <font color="Olive">b<sub>1</sub></font> being  <a href="newton.html#NM1">Prime</a> st <br/>( <font color="Olive">b<sub>1</sub></font> <a href="nat_1.html#R1">divides</a> <font color="Maroon">c<sub>1</sub></font> &amp; <font color="Olive">b<sub>1</sub></font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a> <font color="Maroon">c<sub>1</sub></font> )
 <b>by </b><i><a class="txt" href="moebius1.html#E3:8"><i><font color="Green">E5</font></i></a></i>;<br/>


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