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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E53">Th66</font></span>: <a NAME="T66"><span class="comment"><font color="firebrick">:: GROUP_6:66</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">G</font>, <font color="Olive" title="b2">H</font> being   <a href="group_1.html#NM1" title="GROUP_1:NM.1">Group</a>  st <font color="Olive" title="b1">G</font>,<font color="Olive" title="b2">H</font> <a href="group_6.html#R1" title="GROUP_6:pred.1">are_isomorphic</a>  holds <br/><font color="Olive" title="b2">H</font>,<font color="Olive" title="b1">G</font> <a href="group_6.html#R1" title="GROUP_6:pred.1">are_isomorphic</a> </div></div>
