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



<b>assume </b><a NAME="E1:20"/>
for <font color="Olive">v</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> holds  the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">L</font> <a href="binop_1.html#K2">.</a> <font color="Maroon">u</font>,<font color="Olive">v</font> <a href="hidden.html#R1">=</a> <font color="Olive">v</font>
 ;<br/>

<a NAME="E2:20"/><b>then </b>
for <font color="Olive">v</font> being  <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font> holds  <font color="Maroon">u</font> <a href="lattices.html#K4">"/\"</a> <font color="Olive">v</font> <a href="hidden.html#R1">=</a> <font color="Olive">v</font>
 
;<br/>
<b>hence </b><a NAME="E3:20"/>
<font color="Maroon">u</font> <a href="hidden.html#R1">=</a>  <a href="lattices.html#K6">Top</a> <font color="Maroon">L</font>
 <b>by </b><i><a class="ref" href="lattice2.html#T2" target="_self">Th2</a></i>;<br/>


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