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<b>let </b><font color="Maroon">I</font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">MSS</font> be    <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">I</font>;<br/>



<b>reconsider </b><font color="Maroon">eI</font> =  <a href="finseq_1.html#K6">&lt;*&gt;</a> <font color="Maroon">I</font> as    <a href="finseq_2.html#M2">Element</a> of <font color="Maroon">I</font> <a href="finseq_2.html#K3">*</a>  <b>by </b><i><a class="ref" href="finseq_1.html#T66">FINSEQ_1:66</a></i>;<br/>
<b>thus </b><span class="p1">(<span class="default"><font color="Maroon">MSS</font> <a href="pboole.html#K6">#</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K6">&lt;*&gt;</a> <font color="Maroon">I</font></span>)</span> = 
 <a href="card_3.html#K4">product</a> <span class="p1">(<span class="default"><font color="Maroon">MSS</font> <a href="funct_1.html#NK3" target="_self">*</a> <font color="Maroon">eI</font></span>)</span>
<b>by </b><i><a class="ref" href="pboole.html#D19">PBOOLE:def 19</a></i>
<br/>.= 
<span class="p1"><a href="seq_4.html#K1">{</a><span class="default"><a href="xboole_0.html#K1">{}</a> </span><a href="seq_4.html#K1">}</a></span>
<b>by </b><i><a class="ref" href="card_3.html#T19">CARD_3:19</a>, <a class="ref" href="relat_1.html#T62">RELAT_1:62</a></i>
;<br/>


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