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<b>let </b><font color="Maroon" title="c1">L</font> be   <a href="lattices.html#NM1" title="LATTICES:NM.1">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/>





<b>assume </b><a NAME="E1:14"/>
<font color="Maroon" title="c2">X</font> <a href="boolealg.html#NR3" title="BOOLEALG:NR.3">misses</a> <font color="Maroon" title="c3">Y</font>
 ;<br/>

<a NAME="E2:14"/><b>then </b>
<font color="Maroon" title="c3">Y</font> <a href="lattices.html#K4" title="LATTICES:func.4">"/\"</a> <font color="Maroon" title="c2">X</font> <a href="boolealg.html#R1" title="BOOLEALG:pred.1">=</a>  <a href="lattices.html#K5" title="LATTICES:func.5">Bottom</a> <font color="Maroon" title="c1">L</font>
 
<b>by </b><i><a class="ref" href="boolealg.html#D4" target="_self" title="BOOLEALG:def.4">Def4</a></i>;<br/>
<b>hence </b><a NAME="E3:14"/>
<font color="Maroon" title="c3">Y</font> <a href="boolealg.html#NR3" title="BOOLEALG:NR.3">misses</a> <font color="Maroon" title="c2">X</font>
 <b>by </b><i><a class="ref" href="boolealg.html#D4" target="_self" title="BOOLEALG:def.4">Def4</a></i>;<br/>


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