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<b>let </b><font color="Maroon">R</font> be   <a href="relat_1.html#NM1">Relation</a>;<br/><b>let </b><font color="Maroon">S</font> be   <a href="relat_1.html#NM1">Relation</a>;<br/>



<b>thus </b><font color="Maroon">R</font> <a href="relat_1.html#K7" target="_self">|</a> <span class="p1">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">S</font></span>)</span> = 
<span class="p1">(<span class="default"><font color="Maroon">R</font> <a href="relat_1.html#K7" target="_self">|</a> <span class="p2">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">R</font></span>)</span></span>)</span> <a href="relat_1.html#K7" target="_self">|</a> <span class="p1">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">S</font></span>)</span>
<b>by </b><i><a class="txt" href="relat_1.html#E8"><i><font color="Green">Lemma43</font></i></a></i>
<br/>.= 
<font color="Maroon">R</font> <a href="relat_1.html#K7" target="_self">|</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">S</font></span>)</span> <a href="xboole_0.html#K3">/\</a> <span class="p2">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">R</font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="relat_1.html#D3" target="_self">Def3</a></i>
<br/>.= 
<font color="Maroon">R</font> <a href="relat_1.html#K7" target="_self">|</a> <span class="p1">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <span class="p2">(<span class="default"><font color="Maroon">S</font> <a href="relat_1.html#K7" target="_self">|</a> <span class="p3">(<span class="default"><a href="relat_1.html#K1" target="_self">dom</a> <font color="Maroon">R</font></span>)</span></span>)</span></span>)</span>
<b>by </b><i/>
;<br/>


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