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<b>let </b><font color="Maroon" title="c1">RFin</font> be    <a href="finseq_1.html#M2" title="FINSEQ_1:mode.2">FinSequence</a> of  <a href="numbers.html#K1" title="NUMBERS:func.1">REAL</a> ;<br/>

<b>assume </b><a NAME="E1:65"/><i><font color="Green" title="E54">A1</font></i>: 
 <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <font color="Maroon" title="c1">RFin</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 0
 ;<br/>

<a NAME="E2:65"/><i><font color="Green" title="E55">A2</font></i>: 
 <a href="binop_2.html#K33" title="BINOP_2:func.33">addreal</a>  is <a href="setwiseo.html#V1" title="SETWISEO:attr.1">having_a_unity</a>
 
<b>by </b><i><a class="ref" href="rvsum_1.html#T3" title="RVSUM_1:th.3">RVSUM_1:3</a>, <a class="ref" href="setwiseo.html#D2" title="SETWISEO:def.2">SETWISEO:def 2</a></i>;<br/>
<b>thus </b> <a href="rvsum_1.html#K18" title="RVSUM_1:func.18">Sum</a> <font color="Maroon" title="c1">RFin</font> = 
<a href="binop_2.html#K33" title="BINOP_2:func.33">addreal</a>  <a href="finsop_1.html#K2" title="FINSOP_1:func.2">$$</a> <font color="Maroon" title="c1">RFin</font>
<b>by </b><i><a class="ref" href="rvsum_1.html#D13" title="RVSUM_1:def.13">RVSUM_1:def 13</a></i>
<br/>.= 
0
<b>by </b><i><a class="txt" href="prob_3.html#E2:65"><i><font color="Green" title="E55">A2</font></i></a>, <a class="txt" href="prob_3.html#E1:65"><i><font color="Green" title="E54">A1</font></i></a>, <a class="ref" href="finsop_1.html#D1" title="FINSOP_1:def.1">FINSOP_1:def 1</a>, <a class="ref" href="binop_2.html#T2" title="BINOP_2:th.2">BINOP_2:2</a></i>
;<br/>


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