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<b>let </b><font color="Maroon">i1</font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K4">INT</a> ;<br/><b>let </b><font color="Maroon">I</font> be    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="numbers.html#K4">INT</a> ;<br/>



<b>thus </b> <a href="gr_cy_1.html#K2" target="_self">Sum</a> <span class="p1">(<span class="default"><font color="Maroon">I</font> <a href="finseq_1.html#K8">^</a> <span class="p2"><a href="finseq_1.html#K12">&lt;*</a><span class="default"><font color="Maroon">i1</font></span><a href="finseq_1.html#K12">*&gt;</a></span></span>)</span> = 
<a href="binop_2.html#K44">addint</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K44">addint</a>  <a href="finsop_1.html#K2">$$</a> <font color="Maroon">I</font></span>)</span>,<font color="Maroon">i1</font>
<b>by </b><i><a class="ref" href="finsop_1.html#T5">FINSOP_1:5</a></i>
<br/>.= 
<a href="binop_2.html#K44">addint</a>  <a href="binop_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="gr_cy_1.html#K2" target="_self">Sum</a> <font color="Maroon">I</font></span>)</span>,<span class="p1">(<span class="default"><a href="group_4.html#K2">@</a> <font color="Maroon">i1</font></span>)</span>
<b>by </b><i><a class="ref" href="group_4.html#D2">GROUP_4:def 2</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="gr_cy_1.html#K2" target="_self">Sum</a> <font color="Maroon">I</font></span>)</span> <a href="xcmplx_0.html#K2">+</a> <span class="p1">(<span class="default"><a href="group_4.html#K2">@</a> <font color="Maroon">i1</font></span>)</span>
<b>by </b><i/>
;<br/>


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