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<div><span class="kw">theorem </span><a NAME="T5"><span class="comment"><font color="firebrick">:: RPR_1:5</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">E</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">e1</font>, <font color="Olive" title="b3">e2</font> being   <a href="card_1.html#NM2" title="CARD_1:NM.2">Singleton</a> of <font color="Olive" title="b1">E</font>  st <font color="Olive" title="b2">e1</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Olive" title="b3">e2</font> holds <br/><font color="Olive" title="b2">e1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b3">e2</font> <span class="kw">by</span> <span class="lab"><a class="ref" href="rpr_1.html#T1" target="_self" onmouseover="rs('rpr_1/T1')" onmouseout="rh()">Th1</a></span>;<br/></div></div>
