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<div><span class="kw">theorem </span><a NAME="T37"><span class="comment"><font color="firebrick">:: FUNCT_3:37</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font>, <font color="Olive" title="b2">A</font>, <font color="Olive" title="b3">X</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>   st <font color="Olive" title="b1">x</font> <a href="tarski.html#R2" title="TARSKI:pred.2">in</a> <font color="Olive" title="b3">X</font> <a href="subset_1.html#K6" title="SUBSET_1:func.6">\</a> <font color="Olive" title="b2">A</font> holds <br/><span class="p1">(<span class="default"><a href="funct_3.html#K4" title="FUNCT_3:func.4">chi</a> (<font color="Olive" title="b2">A</font>,<font color="Olive" title="b3">X</font>)</span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b1">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="ordinal1.html#K5" title="ORDINAL1:func.5">0</a> </div></div>
