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<b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>, <font color="Maroon">b</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>;<br/>

<a NAME="E1:19_1_1"/>
( <font color="Maroon">a</font> <a href="lattice3.html#K12">"/\"</a> <font color="Maroon">b</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font> implies <font color="Maroon">b</font> <a href="lattice3.html#K12">"/\"</a> <font color="Maroon">a</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="yellow_0.html#K3">Bottom</a> <font color="Maroon">L</font> )
 
;<br/>
<b>hence </b><a NAME="E2:19_1_1"/>
( <font color="Maroon">a</font> <a href="yellow_5.html#R1" target="_self">meets</a> <font color="Maroon">b</font> implies <font color="Maroon">b</font> <a href="yellow_5.html#R1" target="_self">meets</a> <font color="Maroon">a</font> )
 <b>by </b><i/>;<br/>


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