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<b>reconsider </b><font color="Maroon" title="c3">D'</font> = <font color="Maroon" title="c2">S</font> as  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <span class="p1">(<span class="default"><font color="Maroon" title="c1">L</font> <a href="lattice2.html#K1" title="LATTICE2:func.1">.:</a> </span>)</span> ;<br/>
<a NAME="E2:32_1_1"/>
( not  <a href="filter_2.html#K8" title="FILTER_2:func.8">.:</a> <font color="Maroon" title="c3">D'</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> &amp;  <a href="filter_2.html#K11" title="FILTER_2:func.11">.:</a> <font color="Maroon" title="c2">S</font> is    <a href="lattice4.html#M2" title="LATTICE4:mode.2">ClosedSubset</a> of <font color="Maroon" title="c1">L</font> )
 
;<br/>
<b>hence </b><a NAME="E3:32_1_1"/>
 <a href="filter_2.html#K8" title="FILTER_2:func.8">.:</a> <font color="Maroon" title="c2">S</font> is  non <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  <a href="lattice4.html#M2" title="LATTICE4:mode.2">ClosedSubset</a> of <font color="Maroon" title="c1">L</font>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


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