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<b>let </b><font color="Maroon">BL</font> be  non <a href="realset2.html#V3">trivial</a> <a href="lattices.html#NM8">B_Lattice</a>;<br/>

<b>reconsider </b><font color="Maroon">T</font> =  <a href="lopclset.html#K11" target="_self">StoneSpace</a> <font color="Maroon">BL</font> as  non <a href="struct_0.html#V3">empty</a> <a href="pre_topc.html#NM1">TopSpace</a> ;<br/>
<b>take </b>
<font color="Maroon">T</font>
;<br/>

<a NAME="E2:47"/>
 <a href="lopclset.html#K6" target="_self">OpenClosedSetLatt</a> <font color="Maroon">T</font> <a href="hidden.html#R1">=</a>  <a href="lopclset.html#K12" target="_self">StoneBLattice</a> <font color="Maroon">BL</font>
 
;<br/>
<b>hence </b><a NAME="E3:47"/>
<font color="Maroon">BL</font>, <a href="lopclset.html#K6" target="_self">OpenClosedSetLatt</a> <font color="Maroon">T</font> <a href="filter_1.html#R1">are_isomorphic</a> 
 <b>by </b><i><a class="ref" href="lopclset.html#T8" target="_self">Th8</a></i>;<br/>


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