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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E48">Th50</font></span>: <a NAME="T51"><span class="comment"><font color="firebrick">:: TOPGRP_1:51</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">G</font> being   <a href="topgrp_1.html#V3" title="TOPGRP_1:attr.3">UnContinuous</a>  <a href="topgrp_1.html#NM4" title="TOPGRP_1:NM.4">TopGroup</a><br/>  for <font color="Olive" title="b2">O</font> being   <a href="pre_topc.html#V3" title="PRE_TOPC:attr.3">open</a>  <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Olive" title="b1">G</font> holds  <font color="Olive" title="b2">O</font> <a href="group_2.html#K1" title="GROUP_2:func.1">"</a>  is  <a href="pre_topc.html#V3" title="PRE_TOPC:attr.3">open</a> </div></div>
