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<b>reconsider </b><font color="Maroon">c<sub>3</sub></font> = <span class="p1">{<span class="default"> <font color="Olive">b<sub>1</sub></font> where B is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>1</sub></font> : <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R2">in</a>  <a href="tops_1.html#K1">Int</a> <font color="Olive">b<sub>1</sub></font> </span>}</span>  as  <a href="yellow13.html#V1" target="_self">correct</a>  <a href="yellow13.html#M1" target="_self">basis</a> of <font color="Maroon">c<sub>2</sub></font> <b>by </b><i><a class="txt" href="yellow13.html#E26"><i><font color="Green">Lemma18</font></i></a>, <a class="txt" href="yellow13.html#E27"><i><font color="Green">Lemma19</font></i></a></i>;<br/>
<b>take </b>
<font color="Maroon">c<sub>3</sub></font>
;<br/>

<b>thus </b><a NAME="E2:52_1_1"/>
( not <font color="Maroon">c<sub>3</sub></font> is <a href="xboole_0.html#V1">empty</a> &amp; <font color="Maroon">c<sub>3</sub></font> is <a href="yellow13.html#V1" target="_self">correct</a> )
 ;<br/>


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