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<a NAME="E1:6_1_1"/>
<font color="Maroon">I</font> <a href="mcart_1.html#K1">`1</a>  <a href="hidden.html#R2">in</a>  <a href="gr_cy_1.html#K1">Segm</a> 13
 
<b>by </b><i><a class="ref" href="mcart_1.html#T10">MCART_1:10</a></i>;<br/>
<b>hence </b><a NAME="E2:6_1_1"/>
<font color="Maroon">I</font> <a href="mcart_1.html#K1">`1</a>  is    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> 
 ;<br/>


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