<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="partfun1.html#NM1">PartFunc</a> of  <a href="xboole_0.html#K1">{}</a> ,<font color="Maroon">c<sub>1</sub></font>;<br/>



<b>thus </b><a NAME="E1:73"/>
 <a href="relset_1.html#K4">dom</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 <b>by </b><i><a class="ref" href="partfun1.html#T54" target="_self">Th54</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="partfun1.html#D4" target="_self">PARTFUN1:def 4</a><br/>


</div>
