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

<b>consider </b><font color="Maroon">c<sub>4</sub></font> being    <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>5</sub></font> being    <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">c<sub>2</sub></font><b> such that </b><br/><a NAME="E2:21_2_1"/><i><font color="Green">E6</font></i>: 
<font color="Maroon">c<sub>3</sub></font> <a href="hidden.html#R1">=</a> <span class="p1"><a href="index_1.html#K7" target="_self">[</a><span class="default"><font color="Maroon">c<sub>4</sub></font>,<font color="Maroon">c<sub>5</sub></font></span><a href="index_1.html#K7" target="_self">]</a></span>
 <b>by </b><i><a class="ref" href="index_1.html#D4" target="_self">Def4</a></i>;<br/>
<b>thus </b><a NAME="E3:21_2_1"/>
<font color="Maroon">c<sub>3</sub></font> <a href="mcart_1.html#K2">`2</a>  is    <a href="pboole.html#M1">ManySortedSet</a> of <font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="txt" href="index_1.html#E2:21_2_1"><i><font color="Green">E6</font></i></a>, <a class="ref" href="mcart_1.html#T7">MCART_1:7</a></i>;<br/>


</div>
