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<b>let </b><font color="Maroon">L</font> be   <a href="lattices.html#NM1">Lattice</a>;<br/><b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="filter_0.html#D6">FILTER_0:def 6</a><br/><b>let </b><font color="Maroon">q</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>;<br/>





<b>thus </b><a NAME="E1:2"/>
( <font color="Maroon">p</font> <a href="lattices.html#K3">"\/"</a> <font color="Maroon">q</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="filter_0.html#K1">&lt;.</a><span class="default"><font color="Maroon">L</font></span><a href="filter_0.html#K1">.)</a></span> iff ( <font color="Maroon">p</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="filter_0.html#K1">&lt;.</a><span class="default"><font color="Maroon">L</font></span><a href="filter_0.html#K1">.)</a></span> or <font color="Maroon">q</font> <a href="hidden.html#R2">in</a> <span class="p1"><a href="filter_0.html#K1">&lt;.</a><span class="default"><font color="Maroon">L</font></span><a href="filter_0.html#K1">.)</a></span> ) )
 ;<br/>


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