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<b>consider </b><font color="Maroon">p</font> being    <a href="eqrel_1.html#M1">a_partition</a> of <font color="Maroon">X</font>;<br/>
<b>take </b>
 <a href="partfun1.html#K6">id</a> <font color="Maroon">p</font>
;<br/>

<b>thus </b><a NAME="E2:25_1_1"/>
(  <a href="relat_1.html#K2">rng</a> <span class="p1">(<span class="default"><a href="partfun1.html#K6">id</a> <font color="Maroon">p</font></span>)</span> is    <a href="eqrel_1.html#M1">a_partition</a> of <font color="Maroon">X</font> &amp;  <a href="partfun1.html#K6">id</a> <font color="Maroon">p</font> is <a href="funct_1.html#V2">one-to-one</a> )
 <b>by </b><i><a class="ref" href="relat_1.html#T71">RELAT_1:71</a></i>;<br/>


</div>
