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<div><span class="kw">theorem </span><a NAME="T1"><span class="comment"><font color="firebrick">:: SETFAM_1:1</font></span><br/></a><div class="add"> <a href="setfam_1.html#K1" title="SETFAM_1:func.1">meet</a> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <span class="kw">by</span> <span class="lab"><a class="ref" href="setfam_1.html#D1" target="_self" onmouseover="rs('setfam_1/D1')" onmouseout="rh()">Def1</a></span>;<br/></div></div>
