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for <font color="Olive">n</font> being   <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a>  holds  <span class="p1">(<span class="default"><a href="setlim_1.html#K5" target="_self">@superior_setsequence</a> <font color="Maroon">S</font></span>)</span> <a href="funct_2.html#K3">.</a> <font color="Olive">n</font> <a href="hidden.html#R2">in</a> <font color="Maroon">Si</font>
 
<b>by </b><i><a class="ref" href="prob_1.html#D9">PROB_1:def 9</a></i>;<br/>
<b>hence </b><a NAME="E2:82_1_1"/>
 <a href="prob_1.html#K4">Intersection</a> <span class="p1">(<span class="default"><a href="setlim_1.html#K5" target="_self">@superior_setsequence</a> <font color="Maroon">S</font></span>)</span> is    <a href="subset_1.html#M2">Element</a> of <font color="Maroon">Si</font>
 <b>by </b><i><a class="ref" href="prob_1.html#T32">PROB_1:32</a></i>;<br/>


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