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<b>let </b><font color="Maroon">I</font> be   <a href="filter_0.html#NM2">I_Lattice</a>;<br/><b>let </b><font color="Maroon">j</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">I</font>;<br/><b>let </b><font color="Maroon">i</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">I</font>;<br/><b>let </b><font color="Maroon">FI</font> be    <a href="filter_0.html#M1" target="_self">Filter</a> of <font color="Maroon">I</font>;<br/>







<a NAME="E1:45"/>
( <font color="Maroon">j</font> <a href="lattices.html#K4">"/\"</a> <font color="Maroon">i</font> <a href="lattices.html#R3">[=</a> <font color="Maroon">j</font> &amp; <font color="Maroon">i</font> <a href="lattices.html#K4">"/\"</a> <font color="Maroon">j</font> <a href="hidden.html#R1">=</a> <font color="Maroon">j</font> <a href="lattices.html#K4">"/\"</a> <font color="Maroon">i</font> )
 
<b>by </b><i><a class="ref" href="lattices.html#T23">LATTICES:23</a></i>;<br/>
<a NAME="E2:45"/><b>then </b>
<font color="Maroon">j</font> <a href="lattices.html#R3">[=</a> <font color="Maroon">i</font> <a href="filter_0.html#K4" target="_self">=&gt;</a> <font color="Maroon">j</font>
 
<b>by </b><i><a class="ref" href="filter_0.html#T1" target="_self">Th1</a></i>;<br/>
<b>hence </b><a NAME="E3:45"/>
( <font color="Maroon">j</font> <a href="hidden.html#R2">in</a> <font color="Maroon">FI</font> implies <font color="Maroon">i</font> <a href="filter_0.html#K4" target="_self">=&gt;</a> <font color="Maroon">j</font> <a href="hidden.html#R2">in</a> <font color="Maroon">FI</font> )
 <b>by </b><i/>;<br/>


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