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<b>let </b><font color="Maroon" title="c1">a</font> be  <a href="xreal_0.html#V1" title="XREAL_0:attr.1">real</a>  <a href="ordinal1.html#NM1" title="ORDINAL1:NM.1">number</a> ;<br/>

<b>assume </b><a NAME="E1:58"/><i><font color="Green" title="E39">A1</font></i>: 
( <font color="Maroon" title="c1">a</font> <a href="xxreal_0.html#NR4" title="XXREAL_0:NR.4">&gt;</a>  <a href="numbers.html#K6" title="NUMBERS:func.6">0</a>  &amp; <font color="Maroon" title="c1">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> 1 )
 ;<br/>

<a NAME="E2:58"/>
<font color="Maroon" title="c1">a</font> <a href="power.html#K3" title="POWER:func.3">to_power</a> 1 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">a</font>
 
<b>by </b><i><a class="ref" href="power.html#T30" target="_self" title="POWER:th.30">Th30</a></i>;<br/>
<b>hence </b><a NAME="E3:58"/>
 <a href="power.html#K5" title="POWER:func.5">log</a> <font color="Maroon" title="c1">a</font>,<font color="Maroon" title="c1">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1
 <b>by </b><i><a class="txt" href="power.html#E1:58"><i><font color="Green" title="E39">A1</font></i></a>, <a class="ref" href="power.html#D3" target="_self" title="POWER:def.3">Def3</a></i>;<br/>


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