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<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font> be  <a href="ordinal1.html#V7">natural</a> <a href="ordinal1.html#NM2">Ordinal</a>;<br/>



<a NAME="E1:28"/>
( <font color="Maroon">c<sub>1</sub></font> <a href="arytm_3.html#R2" target="_self">divides</a> <font color="Maroon">c<sub>1</sub></font> <a href="arytm_3.html#K3" target="_self">*^</a> <font color="Maroon">c<sub>2</sub></font> &amp; <font color="Maroon">c<sub>2</sub></font> <a href="arytm_3.html#R2" target="_self">divides</a> <font color="Maroon">c<sub>1</sub></font> <a href="arytm_3.html#K3" target="_self">*^</a> <font color="Maroon">c<sub>2</sub></font> )
 
<b>by </b><i><a class="ref" href="arytm_3.html#D3" target="_self">Def3</a></i>;<br/>
<b>hence </b><a NAME="E2:28"/>
<font color="Maroon">c<sub>1</sub></font> <a href="arytm_3.html#K4" target="_self">lcm</a> <font color="Maroon">c<sub>2</sub></font> <a href="arytm_3.html#R2" target="_self">divides</a> <font color="Maroon">c<sub>1</sub></font> <a href="arytm_3.html#K3" target="_self">*^</a> <font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="ref" href="arytm_3.html#D4" target="_self">Def4</a></i>;<br/>


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