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

<a NAME="E1:23_1_1"/><i><font color="Green">E13</font></i>: 
<font color="Maroon">c<sub>3</sub></font> is    <a href="msualg_2.html#M1">MSSubAlgebra</a> of  <a href="msualg_1.html#G3">MSAlgebra</a>(# the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>3</sub></font>,the <a href="msualg_1.html#U5">Charact</a> of <font color="Maroon">c<sub>3</sub></font> #)
 
<b>by </b><i><a class="ref" href="equation.html#T19" target="_self">Th19</a></i>;<br/>
<a NAME="E2:23_1_1"/>
 <a href="msualg_1.html#G3">MSAlgebra</a>(# the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>3</sub></font>,the <a href="msualg_1.html#U5">Charact</a> of <font color="Maroon">c<sub>3</sub></font> #) is    <a href="msualg_2.html#M1">MSSubAlgebra</a> of <font color="Maroon">c<sub>3</sub></font>
 
<b>by </b><i><a class="ref" href="msualg_2.html#T38">MSUALG_2:38</a></i>;<br/>
<a NAME="E3:23_1_1"/><b>then </b>
 <a href="msualg_1.html#G3">MSAlgebra</a>(# the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>3</sub></font>,the <a href="msualg_1.html#U5">Charact</a> of <font color="Maroon">c<sub>3</sub></font> #) is    <a href="msualg_2.html#M1">MSSubAlgebra</a> of <font color="Maroon">c<sub>2</sub></font>
 
<b>by </b><i><a class="ref" href="msualg_2.html#T7">MSUALG_2:7</a></i>;<br/>
<b>hence </b><a NAME="E4:23_1_1"/>
not  <a href="equation.html#K2" target="_self">SuperAlgebraSet</a> <font color="Maroon">c<sub>3</sub></font> is <a href="xboole_0.html#V1">empty</a>
 <b>by </b><i><a class="txt" href="equation.html#E1:23_1_1"><i><font color="Green">E13</font></i></a>, <a class="ref" href="equation.html#D2" target="_self">Def2</a></i>;<br/>


</div>
