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<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font> be  <a href="xreal_0.html#V1">real</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/>



<b>assume </b><a NAME="E1:38"/><i><font color="Green">E25</font></i>: 
<font color="Maroon">c<sub>1</sub></font> <a href="xxreal_0.html#NR4" target="_self">&gt;</a> 0
 ;<br/>

<a NAME="E2:38"/><b>then </b>
<font color="Maroon">c<sub>1</sub></font> <a href="prepower.html#K12">#R</a> <font color="Maroon">c<sub>2</sub></font> <a href="xxreal_0.html#NR4" target="_self">&gt;</a> 0
 
<b>by </b><i><a class="ref" href="prepower.html#T95">PREPOWER:95</a></i>;<br/>
<b>hence </b><a NAME="E3:38"/>
<font color="Maroon">c<sub>1</sub></font> <a href="power.html#K3" target="_self">to_power</a> <font color="Maroon">c<sub>2</sub></font> <a href="xxreal_0.html#NR4" target="_self">&gt;</a> 0
 <b>by </b><i><a class="txt" href="power.html#E1:38"><i><font color="Green">E25</font></i></a>, <a class="ref" href="power.html#D2" target="_self">Def2</a></i>;<br/>


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