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

<b>set </b><font color="Maroon">G</font> =  <a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font>;<br/>
<b>thus </b><a NAME="E1:76_1_1"/>
for <font color="Olive">u</font>, <font color="Olive">v</font> being  <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span> holds  <font color="Olive">u</font> <a href="lattices.html#K1">"\/"</a> <font color="Olive">v</font> <a href="hidden.html#R1">=</a> <font color="Olive">v</font> <a href="lattices.html#K1">"\/"</a> <font color="Olive">u</font>
 <b>by </b><i/>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D4">LATTICES:def 4</a>,<a class="ref" href="lattices.html#D10">LATTICES:def 10</a><br/>

<b>thus </b><a NAME="E2:76_1_1"/>
for <font color="Olive">u</font>, <font color="Olive">v</font>, <font color="Olive">w</font> being  <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span> holds  <font color="Olive">u</font> <a href="lattices.html#K1">"\/"</a> <span class="p1">(<span class="default"><font color="Olive">v</font> <a href="lattices.html#K1">"\/"</a> <font color="Olive">w</font></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Olive">u</font> <a href="lattices.html#K1">"\/"</a> <font color="Olive">v</font></span>)</span> <a href="lattices.html#K1">"\/"</a> <font color="Olive">w</font>
 <b>by </b><i/>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D5">LATTICES:def 5</a><br/>

<b>thus </b><a NAME="E3:76_1_1"/>
for <font color="Olive">u</font>, <font color="Olive">v</font> being  <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span> holds  <span class="p1">(<span class="default"><font color="Olive">u</font> <a href="lattices.html#K2">"/\"</a> <font color="Olive">v</font></span>)</span> <a href="lattices.html#K1">"\/"</a> <font color="Olive">v</font> <a href="hidden.html#R1">=</a> <font color="Olive">v</font>
 <b>by </b><i><a class="ref" href="normform.html#T45" target="_self">Th45</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D8">LATTICES:def 8</a><br/>

<b>thus </b><a NAME="E4:76_1_1"/>
for <font color="Olive">u</font>, <font color="Olive">v</font> being  <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span> holds  <font color="Olive">u</font> <a href="lattices.html#K2">"/\"</a> <font color="Olive">v</font> <a href="hidden.html#R1">=</a> <font color="Olive">v</font> <a href="lattices.html#K2">"/\"</a> <font color="Olive">u</font>
 <b>by </b><i><a class="ref" href="normform.html#T46" target="_self">Th46</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D6">LATTICES:def 6</a><br/>

<b>thus </b><a NAME="E5:76_1_1"/>
for <font color="Olive">u</font>, <font color="Olive">v</font>, <font color="Olive">w</font> being  <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span> holds  <font color="Olive">u</font> <a href="lattices.html#K2">"/\"</a> <span class="p1">(<span class="default"><font color="Olive">v</font> <a href="lattices.html#K2">"/\"</a> <font color="Olive">w</font></span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Olive">u</font> <a href="lattices.html#K2">"/\"</a> <font color="Olive">v</font></span>)</span> <a href="lattices.html#K2">"/\"</a> <font color="Olive">w</font>
 <b>by </b><i/>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D7">LATTICES:def 7</a><br/>

<b>let </b><font color="Maroon">u</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span>, <font color="Maroon">v</font> be   <a href="struct_0.html#NM1">Element</a> of <span class="p1">(<span class="default"><a href="normform.html#K12" target="_self">NormForm</a> <font color="Maroon">A</font></span>)</span>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D9">LATTICES:def 9</a><br/>

<b>thus </b><a NAME="E6:76_1_1"/>
<font color="Maroon">u</font> <a href="lattices.html#K2">"/\"</a> <span class="p1">(<span class="default"><font color="Maroon">u</font> <a href="lattices.html#K1">"\/"</a> <font color="Maroon">v</font></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">u</font>
 <b>by </b><i/>;<br/>


</div>
