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<b>let </b><font color="Maroon">i</font> be    <a href="subset_1.html#M2">Element</a> of  <a href="numbers.html#K5">NAT</a> ;<br/>

<b>reconsider </b><font color="Maroon">f</font> = <font color="Maroon">i</font> <a href="finseqop.html#K4">|-&gt;</a> 1 as    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K1">REAL</a>  <b>by </b><i><a class="ref" href="finseq_2.html#T77">FINSEQ_2:77</a></i>;<br/>
 <a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="finseqop.html#K4">|-&gt;</a> <span class="p2">(<span class="default"><a href="binop_1.html#K3">the_unity_wrt</a> <a href="binop_2.html#K35">multreal</a> </span>)</span></span>)</span> = 
<a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <font color="Maroon">f</font>
<b>by </b><i>, <a class="ref" href="binop_2.html#T7">BINOP_2:7</a></i>
<br/>.= 
 <a href="binop_1.html#K3">the_unity_wrt</a> <a href="binop_2.html#K35">multreal</a> 
<b>by </b><i><a class="ref" href="binop_2.html#T7">BINOP_2:7</a>, <a class="ref" href="setwop_2.html#T35">SETWOP_2:35</a></i>
;<br/>
<b>hence </b><a NAME="E3:111"/>
 <a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p1">(<span class="default"><font color="Maroon">i</font> <a href="finseqop.html#K4">|-&gt;</a> 1</span>)</span> <a href="hidden.html#R1">=</a> 1
 <b>by </b><i><a class="ref" href="binop_2.html#T7">BINOP_2:7</a></i>;<br/>


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