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<a NAME="E1:245_1_1"/>
 <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">C</font> <a href="abcmiz_1.html#K54" title="ABCMIZ_1:func.54">idval</a> <font color="Maroon" title="c2">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">X</font>
 
<b>by </b><i><a class="ref" href="abcmiz_1.html#T131" target="_self" title="ABCMIZ_1:th.131">ThIV</a></i>;<br/>
<b>hence </b><a NAME="E2:245_1_1"/>
<font color="Maroon" title="c1">C</font> <a href="abcmiz_1.html#K54" title="ABCMIZ_1:func.54">idval</a> <font color="Maroon" title="c2">X</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


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