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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="robbins2.html#V1" target="_self">satisfying_DN_1</a>  <a href="robbins1.html#L2">ComplLattStr</a> ;<br/>

<a NAME="E1:57"/>
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 <font color="Maroon">c<sub>1</sub></font> 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#K5">+</a> <font color="Olive">b<sub>2</sub></font></span>)</span> <a href="robbins1.html#K3">`</a> </span>)</span> <a href="robbins1.html#K5">+</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#K5">+</a> <span class="p4">(<span class="default"><font color="Olive">b<sub>2</sub></font> <a href="robbins1.html#K3">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3">`</a> </span>)</span></span>)</span> <a href="robbins1.html#K3">`</a>  <a href="hidden.html#R1">=</a> <font color="Olive">b<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="robbins2.html#T6" target="_self">Th6</a></i>;<br/>
<b>hence </b><a NAME="E2:57"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="robbins1.html#V4">Robbins</a>
 <b>by </b><i><a class="ref" href="robbins1.html#D5">ROBBINS1:def 5</a></i>;<br/>


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