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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="nat_1.html#NM1">Nat</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be    <a href="finseq_2.html#M2">Element</a> of <font color="Maroon">c<sub>1</sub></font> <a href="finseq_2.html#K4">-tuples_on</a> <a href="numbers.html#K1">REAL</a> ;<br/>



<a NAME="E1:54"/>
<a href="binop_2.html#K31">compreal</a>  <a href="seq_1.html#K2">.</a> 1 <a href="hidden.html#R1">=</a>  <a href="binop_2.html#K7">-</a> 1
 
<b>by </b><i><a class="ref" href="binop_2.html#D7">BINOP_2:def 7</a></i>;<br/>
<b>hence </b><a NAME="E2:54"/>
<span class="p1">(<span class="default"><a href="binop_2.html#K7">-</a> 1</span>)</span> <a href="rvsum_1.html#K10" target="_self">*</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="rvsum_1.html#K6" target="_self">-</a> <font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="ref" href="rvsum_1.html#T16" target="_self">Th16</a>, <a class="ref" href="rvsum_1.html#T22" target="_self">Th22</a>, <a class="ref" href="rvsum_1.html#T23" target="_self">Th23</a>, <a class="ref" href="binop_2.html#T7">BINOP_2:7</a>, <a class="ref" href="finseqop.html#T72">FINSEQOP:72</a></i>;<br/>


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