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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="group_1.html#NM1">Group</a>;<br/>



<a NAME="E1:93"/>
(  <a href="group_2.html#K5">(1).</a> <font color="Maroon">c<sub>1</sub></font> is <a href="realset2.html#V3">trivial</a> &amp;  <a href="group_2.html#K5">(1).</a> <font color="Maroon">c<sub>2</sub></font> is <a href="realset2.html#V3">trivial</a> )
 
<b>by </b><i><a class="ref" href="group_6.html#T11" target="_self">Th11</a></i>;<br/>
<b>hence </b><a NAME="E2:93"/>
 <a href="group_2.html#K5">(1).</a> <font color="Maroon">c<sub>1</sub></font>, <a href="group_2.html#K5">(1).</a> <font color="Maroon">c<sub>2</sub></font> <a href="group_6.html#R2" target="_self">are_isomorphic</a> 
 <b>by </b><i><a class="ref" href="group_6.html#T80" target="_self">Th80</a></i>;<br/>


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