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<b>let </b><font color="Maroon">X</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">A1</font> be   <a href="prob_1.html#NM2">SetSequence</a> of <font color="Maroon">X</font>;<br/>



<b>reconsider </b><font color="Maroon">A2</font> =  <a href="setlim_1.html#K1" target="_self">inferior_setsequence</a> <span class="p1">(<span class="default"><a href="prob_1.html#K3">Complement</a> <font color="Maroon">A1</font></span>)</span> as   <a href="prob_1.html#NM2">SetSequence</a> of <font color="Maroon">X</font> ;<br/>
 <a href="prob_1.html#K3">Complement</a> <font color="Maroon">A2</font> = 
 <a href="setlim_1.html#K2" target="_self">superior_setsequence</a> <span class="p1">(<span class="default"><a href="prob_1.html#K3">Complement</a> <span class="p2">(<span class="default"><a href="prob_1.html#K3">Complement</a> <font color="Maroon">A1</font></span>)</span></span>)</span>
<b>by </b><i/>
<br/>.= 
 <a href="setlim_1.html#K2" target="_self">superior_setsequence</a> <font color="Maroon">A1</font>

;<br/>
<b>hence </b><a NAME="E3:44"/>
 <a href="prob_1.html#K3">Complement</a> <span class="p1">(<span class="default"><a href="setlim_1.html#K2" target="_self">superior_setsequence</a> <font color="Maroon">A1</font></span>)</span> <a href="funct_2.html#R2">=</a>  <a href="setlim_1.html#K1" target="_self">inferior_setsequence</a> <span class="p1">(<span class="default"><a href="prob_1.html#K3">Complement</a> <font color="Maroon">A1</font></span>)</span>
 ;<br/>


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