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<div><span class="kw">theorem </span><a NAME="T8"><span class="comment"><font color="firebrick">:: TAXONOM2:8</font></span><br/></a><div class="add"> <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  is  <a href="taxonom2.html#V4" title="TAXONOM2:attr.4">mutually-disjoint</a>  ;<br/></div></div>
