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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E2">Th2</font></span>: <a NAME="T8"><span class="comment"><font color="firebrick">:: FUNCT_5:8</font></span><br/></a><div class="add">(  <a href="xtuple_0.html#K9" title="XTUPLE_0:func.9">proj1</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>  &amp;  <a href="xtuple_0.html#K10" title="XTUPLE_0:func.10">proj2</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>  ) ;<br/></div></div>
