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<b>reconsider </b><font color="Maroon">c<sub>4</sub></font> =  <a href="msualg_1.html#G3">MSAlgebra</a>(# <font color="Maroon">c<sub>3</sub></font>,<span class="p1">(<span class="default"><a href="msualg_2.html#K4" target="_self">Opers</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font></span>)</span> #) as    <a href="msualg_1.html#L3">MSAlgebra</a> of <font color="Maroon">c<sub>1</sub></font> ;<br/>
<a NAME="E2:48_1_1"/>
for <font color="Olive">b<sub>1</sub></font> being  <a href="msualg_2.html#NM1">MSSubset</a> of <font color="Maroon">c<sub>2</sub></font> st <font color="Olive">b<sub>1</sub></font> <a href="pboole.html#R6">=</a> the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>4</sub></font> holds <br/>( <font color="Olive">b<sub>1</sub></font> is <a href="msualg_2.html#V3" target="_self">opers_closed</a> &amp; the <a href="msualg_1.html#U5">Charact</a> of <font color="Maroon">c<sub>4</sub></font> <a href="pboole.html#R6">=</a>  <a href="msualg_2.html#K4" target="_self">Opers</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Olive">b<sub>1</sub></font> )
 
<b>by </b><i><a class="txt" href="msualg_2.html#E1:48"><i><font color="Green">E32</font></i></a></i>;<br/>
<b>hence </b><a NAME="E3:48_1_1"/>
 <a href="msualg_1.html#G3">MSAlgebra</a>(# <font color="Maroon">c<sub>3</sub></font>,<span class="p1">(<span class="default"><a href="msualg_2.html#K4" target="_self">Opers</a> <font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>3</sub></font></span>)</span> #) is  <a href="msualg_1.html#V4">strict</a>  <a href="msualg_2.html#M1" target="_self">MSSubAlgebra</a> of <font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="ref" href="msualg_2.html#D10" target="_self">Def10</a></i>;<br/>


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