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<b>let </b><font color="Maroon">c<sub>1</sub></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#L2" target="_self">ComplLattStr</a> ;<br/>

<b>assume </b><a NAME="E1:101_1_1"/><i><font color="Green">E61</font></i>: 
<font color="Maroon">c<sub>1</sub></font> is <a href="robbins1.html#V4" target="_self">Robbins</a>
 ;<br/>

<b>then consider </b><font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> being   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">c<sub>1</sub></font><b> such that </b><br/><a NAME="E3:101_1_1"/><i><font color="Green">E62</font></i>: 
<font color="Maroon">c<sub>2</sub></font> <a href="robbins1.html#K5" target="_self">+</a> <font color="Maroon">c<sub>3</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>3</sub></font>
 <b>by </b><i><a class="ref" href="robbins1.html#T60" target="_self">Th60</a></i>;<br/>
<b>thus </b><a NAME="E4:101_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="robbins1.html#V5" target="_self">Huntington</a>
 <b>by </b><i><a class="txt" href="robbins1.html#E1:101_1_1"><i><font color="Green">E61</font></i></a>, <a class="txt" href="robbins1.html#E3:101_1_1"><i><font color="Green">E62</font></i></a>, <a class="ref" href="robbins1.html#T59" target="_self">Th59</a></i>;<br/>


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