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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="ordinal1.html#V7">natural</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/>

<a NAME="E1:39"/>
0 <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font> <a href="xcmplx_0.html#K3">*</a> 0
 
;<br/>
<b>hence </b><a NAME="E2:39"/>
<font color="Maroon">c<sub>1</sub></font> <a href="nat_1.html#R1" target="_self">divides</a> 0
 <b>by </b><i><a class="ref" href="nat_1.html#D3" target="_self">Def3</a></i>;<br/>

<a NAME="E3:39"/><i><font color="Green">E24</font></i>: 
<font color="Maroon">c<sub>1</sub></font> is   <a href="nat_1.html#NM1">Nat</a>
 
<b>by </b><i><a class="ref" href="ordinal1.html#D13">ORDINAL1:def 13</a></i>;<br/>
<a NAME="E4:39"/>
<font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>1</sub></font> <a href="xcmplx_0.html#K3">*</a> 1
 
;<br/>
<b>hence </b><a NAME="E5:39"/>
1 <a href="nat_1.html#R1" target="_self">divides</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="txt" href="nat_1.html#E3:39"><i><font color="Green">E24</font></i></a>, <a class="ref" href="nat_1.html#D3" target="_self">Def3</a></i>;<br/>


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