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<b>set </b><font color="Maroon">c<sub>1</sub></font> =  <a href="robbins1.html#K1" target="_self">TrivComplLat</a> ;<br/>
<b>thus </b><a NAME="E1:15_1_1"/>
for <font color="Olive">b<sub>1</sub></font>, <font color="Olive">b<sub>2</sub></font> being  <a href="struct_0.html#NM1">Element</a> of <a href="robbins1.html#K1" target="_self">TrivComplLat</a>  holds <font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>2</sub></font> <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>2</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="realset2.html#D7">REALSET2:def 7</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="lattices.html#D4">LATTICES:def 4</a><br/>

<b>thus </b><a NAME="E2:15_1_1"/>
for <font color="Olive">b<sub>1</sub></font>, <font color="Olive">b<sub>2</sub></font>, <font color="Olive">b<sub>3</sub></font> being  <a href="struct_0.html#NM1">Element</a> of <a href="robbins1.html#K1" target="_self">TrivComplLat</a>  holds <span class="p1">(<span class="default"><font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>2</sub></font></span>)</span> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>3</sub></font> <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <span class="p1">(<span class="default"><font color="Olive">b<sub>2</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>3</sub></font></span>)</span>
 <b>by </b><i><a class="ref" href="realset2.html#D7">REALSET2:def 7</a></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="E3:15_1_1"/>
for <font color="Olive">b<sub>1</sub></font>, <font color="Olive">b<sub>2</sub></font> being  <a href="struct_0.html#NM1">Element</a> of <a href="robbins1.html#K1" target="_self">TrivComplLat</a>  holds <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>2</sub></font></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span> <a href="robbins1.html#NK4" target="_self">+</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#NK4" target="_self">+</a> <span class="p4">(<span class="default"><font color="Olive">b<sub>2</sub></font> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3" target="_self">`</a>  <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="realset2.html#D7">REALSET2:def 7</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="robbins1.html#D5" target="_self">ROBBINS1:def 5</a><br/>

<b>thus </b><a NAME="E4:15_1_1"/>
for <font color="Olive">b<sub>1</sub></font>, <font color="Olive">b<sub>2</sub></font> being  <a href="struct_0.html#NM1">Element</a> of <a href="robbins1.html#K1" target="_self">TrivComplLat</a>  holds <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span> <a href="robbins1.html#NK4" target="_self">+</a> <span class="p3">(<span class="default"><font color="Olive">b<sub>2</sub></font> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span> <a href="robbins1.html#NK4" target="_self">+</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Olive">b<sub>1</sub></font> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span> <a href="robbins1.html#NK4" target="_self">+</a> <font color="Olive">b<sub>2</sub></font></span>)</span> <a href="robbins1.html#K3" target="_self">`</a> </span>)</span> <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="realset2.html#D7">REALSET2:def 7</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="robbins1.html#D6" target="_self">ROBBINS1:def 6</a><br/>

<b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="struct_0.html#NM1">Element</a> of <a href="robbins1.html#K1" target="_self">TrivComplLat</a> ; <i><font color="Red">:: according to </font></i><a class="ref" href="robbins1.html#D7" target="_self">ROBBINS1:def 7</a><br/>

<b>thus </b><a NAME="E5:15_1_1"/>
<font color="Maroon">c<sub>2</sub></font> <a href="lattices.html#K1">"\/"</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>2</sub></font>
 <b>by </b><i><a class="ref" href="realset2.html#D7">REALSET2:def 7</a></i>;<br/>


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