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<b>let </b><font color="Maroon">B</font> be   <a href="lattices.html#NM8">B_Lattice</a>;<br/><b>let </b><font color="Maroon">p</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">B</font>, <font color="Maroon">q</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">B</font>; <i><font color="Red">:: according to </font></i><a class="ref" href="filter_0.html#D7" target="_self">FILTER_0:def 7</a><br/>



<b>take </b><font color="Maroon">r</font> = <span class="p1">(<span class="default"><font color="Maroon">p</font> <a href="lattices.html#K7">`</a> </span>)</span> <a href="lattices.html#K3">"\/"</a> <font color="Maroon">q</font>;<br/>

<b>thus </b><a NAME="E1:42"/>
( <font color="Maroon">p</font> <a href="lattices.html#K4">"/\"</a> <font color="Maroon">r</font> <a href="lattices.html#R3">[=</a> <font color="Maroon">q</font> &amp; ( for <font color="Olive">r1</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">B</font>  st <font color="Maroon">p</font> <a href="lattices.html#K4">"/\"</a> <font color="Olive">r1</font> <a href="lattices.html#R3">[=</a> <font color="Maroon">q</font> holds <br/><font color="Olive">r1</font> <a href="lattices.html#R3">[=</a> <font color="Maroon">r</font> ) )
 <b>by </b><i/>;<br/>


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