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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="conlat_1.html#NM1">FormalContext</a>;<br/>

<a NAME="E1:36"/>
 <a href="conlat_2.html#K10" target="_self">DualHomomorphism</a> <font color="Maroon">c<sub>1</sub></font> is <a href="lattice4.html#V3">isomorphism</a>
 
<b>by </b><i><a class="ref" href="conlat_2.html#T21" target="_self">Th21</a></i>;<br/>
<b>hence </b><a NAME="E2:36"/>
 <a href="conlat_1.html#K11">ConceptLattice</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="conlat_2.html#K7" target="_self">.:</a> </span>)</span>,<span class="p1">(<span class="default"><a href="conlat_1.html#K11">ConceptLattice</a> <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="lattice2.html#K1">.:</a>  <a href="filter_1.html#R1">are_isomorphic</a> 
 <b>by </b><i><a class="ref" href="lattice4.html#D5">LATTICE4:def 5</a></i>;<br/>


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