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<b>let </b><font color="Maroon" title="c1">BL</font> be  non <a href="struct_0.html#V7" title="STRUCT_0:attr.7">trivial</a> <a href="lattices.html#NM8" title="LATTICES:NM.8">B_Lattice</a>;<br/>

<a NAME="E1:46"/>
 <a href="lopclset.html#K13" title="LOPCLSET:func.13">UFilter</a> <font color="Maroon" title="c1">BL</font> is <a href="lattice4.html#V3" title="LATTICE4:attr.3">isomorphism</a>
 
<b>by </b><i><a class="ref" href="lopclset.html#T42" target="_self" title="LOPCLSET:th.42">Th42</a></i>;<br/>
<b>then consider </b><font color="Maroon" title="c2">f</font> being    <a href="lattice4.html#M1" title="LATTICE4:mode.1">Homomorphism</a> of <font color="Maroon" title="c1">BL</font>, <a href="lopclset.html#K12" title="LOPCLSET:func.12">StoneBLattice</a> <font color="Maroon" title="c1">BL</font><b> such that </b><br/><a NAME="E3:46"/><i><font color="Green" title="E33">A1</font></i>: 
( <font color="Maroon" title="c2">f</font> <a href="funct_2.html#R2" title="FUNCT_2:pred.2">=</a>  <a href="lopclset.html#K13" title="LOPCLSET:func.13">UFilter</a> <font color="Maroon" title="c1">BL</font> &amp; <font color="Maroon" title="c2">f</font> is <a href="lattice4.html#V3" title="LATTICE4:attr.3">isomorphism</a> )
 ;<br/>
<b>thus </b><a NAME="E4:46"/>
<font color="Maroon" title="c1">BL</font>, <a href="lopclset.html#K12" title="LOPCLSET:func.12">StoneBLattice</a> <font color="Maroon" title="c1">BL</font> <a href="filter_1.html#R1" title="FILTER_1:pred.1">are_isomorphic</a> 
 <b>by </b><i><a class="txt" href="lopclset.html#E3:46"><i><font color="Green" title="E33">A1</font></i></a>, <a class="ref" href="lattice4.html#D5" title="LATTICE4:def.5">LATTICE4:def 5</a></i>;<br/>


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