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

<b>let </b><font color="Maroon">R</font> be    <a href="robbins3.html#M3" target="_self">CLatAugmentation</a> of <font color="Maroon">L</font>;<br/>

<a NAME="E1:77_1_1"/>
 <a href="robbins1.html#G3">OrthoLattStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>,the <a href="lattices.html#U2">L_join</a> of <font color="Maroon">L</font>,the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">L</font>,the <a href="robbins1.html#U1">Compl</a> of <font color="Maroon">L</font> #) <a href="hidden.html#R1">=</a>  <a href="robbins1.html#G3">OrthoLattStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">R</font>,the <a href="lattices.html#U2">L_join</a> of <font color="Maroon">R</font>,the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">R</font>,the <a href="robbins1.html#U1">Compl</a> of <font color="Maroon">R</font> #)
 
<b>by </b><i><a class="ref" href="robbins3.html#T4" target="_self">Th4</a></i>;<br/>
<a NAME="E2:77_1_1"/><b>then </b>
 <a href="lattices.html#G3">LattStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">L</font>,the <a href="lattices.html#U2">L_join</a> of <font color="Maroon">L</font>,the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">L</font> #) <a href="hidden.html#R1">=</a>  <a href="lattices.html#G3">LattStr</a>(# the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">R</font>,the <a href="lattices.html#U2">L_join</a> of <font color="Maroon">R</font>,the <a href="lattices.html#U1">L_meet</a> of <font color="Maroon">R</font> #)
 
;<br/>
<b>hence </b><a NAME="E3:77_1_1"/>
<font color="Maroon">R</font> is <a href="lattices.html#V6">meet-commutative</a>
 <b>by </b><i><a class="ref" href="robbins3.html#D1" target="_self">Def1</a></i>;<br/>


</div>
