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

<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>reconsider </b><font color="Maroon">P</font> = <span class="p1"><a href="domain_1.html#K6">{</a><span class="default"><font color="Maroon">p</font></span><a href="domain_1.html#K6">}</a></span> as   <a href="t_1topsp.html#NM2">Part-Family</a> of <font color="Maroon">X</font> <b>by </b><i/>;<br/>
<b>take </b>
<font color="Maroon">P</font>
;<br/>

<b>thus </b><a NAME="E3:15_1_1"/>
not <font color="Maroon">P</font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


</div>
