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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="seq_1.html#NM1">Real_Sequence</a>;<br/>

<b>thus </b><span class="p1">(<span class="default"><a href="seq_1.html#K17" target="_self">-</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="seq_1.html#K18" target="_self">"</a>  = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span> <a href="seq_1.html#K14" target="_self">(#)</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="seq_1.html#K18" target="_self">"</a> 
<b>by </b><i><a class="ref" href="seq_1.html#T25" target="_self">Th25</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span> <a href="seq_1.html#K14" target="_self">(#)</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="seq_1.html#K18" target="_self">"</a> </span>)</span>
<b>by </b><i><a class="txt" href="seq_1.html#E65"><i><font color="Green">Lemma43</font></i></a>, <a class="ref" href="seq_1.html#T54" target="_self">Th54</a></i>
;<br/>


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