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<div><span class="kw">theorem </span><a NAME="T3"><span class="comment"><font color="firebrick">:: CARD_3:3</font></span><br/></a><div class="add"> <a href="card_3.html#K2" title="CARD_3:func.2">disjoin</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="card_3.html#D3" target="_self" onmouseover="rs('card_3/D3')" onmouseout="rh()">Def3</a>, <a class="ref" href="relat_1.html#T38" onmouseover="rs('relat_1/T38')" onmouseout="rh()">RELAT_1:38</a></span>;<br/></div></div>
