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<b>let </b><font color="Maroon">c<sub>1</sub></font> be  <a href="xreal_0.html#V1">real</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/>

<b>consider </b><font color="Maroon">c<sub>2</sub></font> being   <a href="prepower.html#NM1">Rational_Sequence</a><b> such that </b><br/><a NAME="E2:98"/><i><font color="Green">E78</font></i>: 
( <font color="Maroon">c<sub>2</sub></font> is <a href="seq_2.html#V4">convergent</a> &amp; <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a>  <a href="seq_2.html#K2">lim</a> <font color="Maroon">c<sub>2</sub></font> &amp; ( for <font color="Olive">b<sub>1</sub></font> being  <a href="nat_1.html#NM1">Nat</a> holds <font color="Maroon">c<sub>2</sub></font> <a href="prepower.html#K10" target="_self">.</a> <font color="Olive">b<sub>1</sub></font> <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">c<sub>1</sub></font> ) )
 <b>by </b><i><a class="ref" href="prepower.html#T79" target="_self">Th79</a></i>;<br/>
<a NAME="E3:98"/><i><font color="Green">E79</font></i>: 
1 <a href="prepower.html#K11" target="_self">#Q</a> <font color="Maroon">c<sub>2</sub></font> is <a href="seq_2.html#V4">convergent</a>
 
<b>by </b><i><a class="txt" href="prepower.html#E2:98"><i><font color="Green">E78</font></i></a>, <a class="ref" href="prepower.html#T82" target="_self">Th82</a></i>;<br/>
<div><i><font color="Green">E80</font></i>: <a class="txt" onclick="hs2(this)" href="javascript:()" title="98_1"><b>now </b></a><div class="add"><b>let </b><font color="Maroon">c<sub>3</sub></font> be   <a href="nat_1.html#NM1">Nat</a>;<br/><b>thus </b><span class="p1">(<span class="default">1 <a href="prepower.html#K11" target="_self">#Q</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="seq_1.html#K2">.</a> <font color="Maroon">c<sub>3</sub></font> = 
1 <a href="prepower.html#K9" target="_self">#Q</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="prepower.html#K10" target="_self">.</a> <font color="Maroon">c<sub>3</sub></font></span>)</span>
<b>by </b><i><a class="ref" href="prepower.html#D7" target="_self">Def7</a></i>
<br/>.= 
1
<b>by </b><i><a class="ref" href="prepower.html#T62" target="_self">Th62</a></i>
;<br/></div><b>end;</b></div>
<a NAME="E5:98"/><b>then </b>
1 <a href="prepower.html#K11" target="_self">#Q</a> <font color="Maroon">c<sub>2</sub></font> is <a href="funct_1.html#V3">constant</a>
 
<b>by </b><i><a class="ref" href="seqm_3.html#D6">SEQM_3:def 6</a></i>;<br/>
<b>then </b> <a href="seq_2.html#K2">lim</a> <span class="p1">(<span class="default">1 <a href="prepower.html#K11" target="_self">#Q</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> = 
<span class="p1">(<span class="default">1 <a href="prepower.html#K11" target="_self">#Q</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="seq_1.html#K2">.</a> 0
<b>by </b><i><a class="ref" href="seq_4.html#T41">SEQ_4:41</a></i>
<br/>.= 
1
<b>by </b><i><a class="txt" href="prepower.html#E4:98"><i><font color="Green">E80</font></i></a></i>
;<br/>
<b>hence </b><a NAME="E7:98"/>
1 <a href="prepower.html#K12" target="_self">#R</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R1">=</a> 1
 <b>by </b><i><a class="txt" href="prepower.html#E2:98"><i><font color="Green">E78</font></i></a>, <a class="txt" href="prepower.html#E3:98"><i><font color="Green">E79</font></i></a>, <a class="ref" href="prepower.html#D8" target="_self">Def8</a></i>;<br/>


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