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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E169">ThB30</font></span>: <a NAME="T231"><span class="comment"><font color="firebrick">:: GROUP_1A:231</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">G</font> being   <a href="group_1a.html#NM1" title="GROUP_1A:NM.1">addGroup</a>  st (  for <font color="Olive" title="b2">a</font>, <font color="Olive" title="b3">b</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Olive" title="b1">G</font> holds  <font color="Olive" title="b2">a</font> <a href="group_1a.html#K25" title="GROUP_1A:func.25">*</a> <font color="Olive" title="b3">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b2">a</font> ) holds <br/><font color="Olive" title="b1">G</font> is  <a href="rlvect_1.html#V2" title="RLVECT_1:attr.2">Abelian</a> </div></div>
