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<b>let </b><font color="Maroon">a</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">b</font> be    <a href="hidden.html#M1">set</a> , <font color="Maroon">c</font> be    <a href="hidden.html#M1">set</a> ;<br/>

<i><font color="Green">E40</font></i>:  <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="cqc_lang.html#K3" target="_self">.--&gt;</a> <font color="Maroon">c</font></span>)</span> = 
<span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">a</font></span><a href="tarski.html#K1">}</a></span>
<b>by </b><i><a class="ref" href="funcop_1.html#T19">FUNCOP_1:19</a></i>
<br/>.= 
 <a href="relat_1.html#K1">dom</a> <span class="p1">(<span class="default"><span class="p2"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">a</font></span><a href="tarski.html#K1">}</a></span> <a href="funcop_1.html#K2">--&gt;</a> <font color="Maroon">b</font></span>)</span>
<b>by </b><i><a class="ref" href="funcop_1.html#T19">FUNCOP_1:19</a></i>
;<br/>
<b>thus </b><font color="Maroon">a</font>,<font color="Maroon">a</font> <a href="funct_4.html#K4">--&gt;</a> <font color="Maroon">b</font>,<font color="Maroon">c</font> = 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="cqc_lang.html#K3" target="_self">.--&gt;</a> <font color="Maroon">b</font></span>)</span> <a href="funct_4.html#K1">+*</a> <span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="cqc_lang.html#K3" target="_self">.--&gt;</a> <font color="Maroon">c</font></span>)</span>
<b>by </b><i><a class="ref" href="funct_4.html#D4">FUNCT_4:def 4</a></i>
<br/>.= 
<font color="Maroon">a</font> <a href="cqc_lang.html#K3" target="_self">.--&gt;</a> <font color="Maroon">c</font>
<b>by </b><i>, <a class="ref" href="funct_4.html#T20">FUNCT_4:20</a></i>
;<br/>


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