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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E14">Th32</font></span>: <a NAME="T38"><span class="comment"><font color="firebrick">:: RELAT_1:38</font></span><br/></a><div class="add">(  <a href="relat_1.html#NK1" title="RELAT_1:NK.1">dom</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="relat_1.html#NK2" title="RELAT_1:NK.2">rng</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>
