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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="lattices.html#NM8">B_Lattice</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>



<a NAME="E1:66"/>
<font color="Maroon">c<sub>2</sub></font> <a href="lattices.html#K7" target="_self">`</a>  <a href="lattices.html#R2" target="_self">is_a_complement_of</a> <font color="Maroon">c<sub>2</sub></font>
 
<b>by </b><i><a class="ref" href="lattices.html#D21" target="_self">Def21</a></i>;<br/>
<b>hence </b><a NAME="E2:66"/>
<span class="p1">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="lattices.html#K7" target="_self">`</a> </span>)</span> <a href="lattices.html#K3" target="_self">"\/"</a> <font color="Maroon">c<sub>2</sub></font> <a href="hidden.html#R1">=</a>  <a href="lattices.html#K6" target="_self">Top</a> <font color="Maroon">c<sub>1</sub></font>
 <b>by </b><i><a class="ref" href="lattices.html#D18" target="_self">Def18</a></i>;<br/>


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