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<div><span class="kw">theorem </span><a NAME="T14"><span class="comment"><font color="firebrick">:: SGRAPH1:14</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font> being   non  <a href="zfmisc_1.html#V1" title="ZFMISC_1:attr.1">trivial</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>   holds  not  <a href="sgraph1.html#K2" title="SGRAPH1:func.2">TWOELEMENTSETS</a> <font color="Olive" title="b1">A</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> </div></div>
