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(  <a href="relset_1.html#K4">dom</a> <font color="Maroon">seq1</font> <a href="hidden.html#R1">=</a> <font color="Maroon">C</font> &amp;  <a href="relset_1.html#K4">dom</a> <font color="Maroon">seq2</font> <a href="hidden.html#R1">=</a> <font color="Maroon">C</font> )
 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>
<b>hence </b> <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><font color="Maroon">seq1</font> <a href="comseq_1.html#K3" target="_self">(#)</a> <font color="Maroon">seq2</font></span>)</span> = 
<font color="Maroon">C</font> <a href="xboole_0.html#K3">/\</a> <font color="Maroon">C</font>
<b>by </b><i/>
<br/>.= 
<font color="Maroon">C</font>

;<br/> <i><font color="Red">:: according to </font></i><a class="ref" href="partfun1.html#D4">PARTFUN1:def 4</a><br/>


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