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<b>let </b><font color="Maroon">D</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">d</font> be    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font>;<br/><b>let </b><font color="Maroon">g</font> be   <a href="binop_1.html#NM2">BinOp</a> of <font color="Maroon">D</font>;<br/>





<b>thus </b><font color="Maroon">g</font> <a href="finsop_1.html#K2" target="_self">"**"</a> <span class="p1">(<span class="default">1 <a href="finsop_1.html#K1" target="_self">|-&gt;</a> <font color="Maroon">d</font></span>)</span> = 
<font color="Maroon">g</font> <a href="finsop_1.html#K2" target="_self">"**"</a> <span class="p1"><a href="finseq_1.html#K12">&lt;*</a><span class="default"><font color="Maroon">d</font></span><a href="finseq_1.html#K12">*&gt;</a></span>
<b>by </b><i><a class="ref" href="finseq_2.html#T73">FINSEQ_2:73</a></i>
<br/>.= 
<font color="Maroon">d</font>
<b>by </b><i/>
;<br/>


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