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<b>consider </b><font color="Maroon">c<sub>3</sub></font> being    <a href="osalg_2.html#M2" target="_self">OSSubset</a> of <font color="Maroon">c<sub>2</sub></font>;<br/>
<a NAME="E2:36_1_1"/>
( the <a href="msualg_1.html#U4">Sorts</a> of <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R2">in</a>  <a href="osalg_2.html#K5" target="_self">OSSubSort</a> <font color="Maroon">c<sub>3</sub></font> &amp;  <a href="osalg_2.html#K5" target="_self">OSSubSort</a> <font color="Maroon">c<sub>3</sub></font> <a href="tarski.html#R1">c=</a>  <a href="osalg_2.html#K6" target="_self">OSSubSort</a> <font color="Maroon">c<sub>2</sub></font> )
 
<b>by </b><i><a class="ref" href="osalg_2.html#T22" target="_self">Th22</a>, <a class="ref" href="osalg_2.html#T23" target="_self">Th23</a></i>;<br/>
<b>hence </b><a NAME="E3:36_1_1"/>
not  <a href="osalg_2.html#K6" target="_self">OSSubSort</a> <font color="Maroon">c<sub>2</sub></font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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