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<div><span class="kw">theorem </span><a NAME="T1"><span class="comment"><font color="firebrick">:: ALTCAT_2:1</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">X1</font>, <font color="Olive" title="b2">X2</font>, <font color="Olive" title="b3">a1</font>, <font color="Olive" title="b4">a2</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds  <span class="p1"><a href="funct_3.html#K16" title="FUNCT_3:func.16">[:</a><span class="default"><span class="p2">(<span class="default"><font color="Olive" title="b1">X1</font> <a href="funcop_1.html#K7" title="FUNCOP_1:func.7">--&gt;</a> <font color="Olive" title="b3">a1</font></span>)</span>,<span class="p2">(<span class="default"><font color="Olive" title="b2">X2</font> <a href="funcop_1.html#K7" title="FUNCOP_1:func.7">--&gt;</a> <font color="Olive" title="b4">a2</font></span>)</span></span><a href="funct_3.html#K16" title="FUNCT_3:func.16">:]</a></span> <a href="funct_2.html#R1" title="FUNCT_2:pred.1">=</a> <span class="p1"><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">[:</a><span class="default"><font color="Olive" title="b1">X1</font>,<font color="Olive" title="b2">X2</font></span><a href="zfmisc_1.html#K2" title="ZFMISC_1:func.2">:]</a></span> <a href="funcop_1.html#K7" title="FUNCOP_1:func.7">--&gt;</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Olive" title="b3">a1</font>,<font color="Olive" title="b4">a2</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span></div></div>
