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<div><span class="kw">theorem </span><a NAME="T61"><span class="comment"><font color="firebrick">:: GROUP_9:61</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">O</font>, <font color="Olive" title="b2">E</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b3">A</font> being   <a href="funct_2.html#NM5" title="FUNCT_2:NM.5">Action</a> of <font color="Olive" title="b1">O</font>,<font color="Olive" title="b2">E</font> holds   <a href="subset_1.html#K2" title="SUBSET_1:func.2">[#]</a> <font color="Olive" title="b2">E</font> <a href="group_9.html#R1" title="GROUP_9:pred.1">is_stable_under_the_action_of</a> <font color="Olive" title="b3">A</font> ;<br/></div></div>
