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

<b>let </b><font color="Maroon">L</font> be  non <a href="struct_0.html#V3">empty</a> <a href="lattices.html#V4">join-commutative</a> <a href="lattices.html#V5">join-associative</a> <a href="robbins1.html#V5" target="_self">Huntington</a> <a href="robbins1.html#V6" target="_self">join-idempotent</a>  <a href="robbins1.html#L2" target="_self">ComplLattStr</a> ;<br/>

<b>consider </b><font color="Maroon">a</font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>;<br/>
<b>thus </b><span class="p1">(<span class="default"><a href="lattices.html#K6">Top</a> <font color="Maroon">L</font></span>)</span> <a href="robbins1.html#K3" target="_self">`</a>  = 
<span class="p1">(<span class="default"><font color="Maroon">a</font> <a href="robbins1.html#K5" target="_self">+</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> 
<b>by </b><i/>
<br/>.= 
 <a href="robbins1.html#K7" target="_self">Bot</a> <font color="Maroon">L</font>
<b>by </b><i/>
;<br/>

<b>hence </b><a NAME="E3:32"/>
 <a href="lattices.html#K6">Top</a> <font color="Maroon">L</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="robbins1.html#K7" target="_self">Bot</a> <font color="Maroon">L</font></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> 
 <b>by </b><i/>;<br/>


</div>
