<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon" title="c1">L</font> be   <a href="lattices.html#NM8" title="LATTICES:NM.8">B_Lattice</a>;<br/><b>let </b><font color="Maroon" title="c2">X</font>, <font color="Maroon" title="c3">Y</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">L</font>;<br/>





<a NAME="E1:63"/>
( <font color="Maroon" title="c2">X</font> <a href="lattices.html#K4" title="LATTICES:func.4">"/\"</a> <font color="Maroon" title="c3">Y</font> <a href="boolealg.html#R4" title="BOOLEALG:pred.4">misses</a> <font color="Maroon" title="c2">X</font> <a href="boolealg.html#K1" title="BOOLEALG:func.1">\</a> <font color="Maroon" title="c3">Y</font> &amp; <font color="Maroon" title="c2">X</font> <a href="lattices.html#K4" title="LATTICES:func.4">"/\"</a> <font color="Maroon" title="c3">Y</font> <a href="boolealg.html#R4" title="BOOLEALG:pred.4">misses</a> <font color="Maroon" title="c3">Y</font> <a href="boolealg.html#K1" title="BOOLEALG:func.1">\</a> <font color="Maroon" title="c2">X</font> )
 
<b>by </b><i><a class="ref" href="boolealg.html#T70" target="_self" title="BOOLEALG:th.70">Th70</a></i>;<br/>
<b>hence </b><a NAME="E2:63"/>
<font color="Maroon" title="c2">X</font> <a href="lattices.html#K4" title="LATTICES:func.4">"/\"</a> <font color="Maroon" title="c3">Y</font> <a href="boolealg.html#R4" title="BOOLEALG:pred.4">misses</a> <font color="Maroon" title="c2">X</font> <a href="boolealg.html#K3" title="BOOLEALG:func.3">\+\</a> <font color="Maroon" title="c3">Y</font>
 <b>by </b><i><a class="ref" href="boolealg.html#T69" target="_self" title="BOOLEALG:th.69">Th69</a></i>;<br/>


</div>
