<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T48"><span class="comment"><font color="firebrick">:: FILTER_1:48</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">L1</font>, <font color="Olive" title="b2">L2</font> being   <a href="lattices.html#NM1" title="LATTICES:NM.1">Lattice</a> holds  <span class="p1"><a href="filter_1.html#K7" title="FILTER_1:func.7">[:</a><span class="default"><font color="Olive" title="b1">L1</font>,<font color="Olive" title="b2">L2</font></span><a href="filter_1.html#K7" title="FILTER_1:func.7">:]</a></span> <a href="lattice2.html#K1" title="LATTICE2:func.1">.:</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="filter_1.html#K7" title="FILTER_1:func.7">[:</a><span class="default"><span class="p2">(<span class="default"><font color="Olive" title="b1">L1</font> <a href="lattice2.html#K1" title="LATTICE2:func.1">.:</a></span>)</span>,<span class="p2">(<span class="default"><font color="Olive" title="b2">L2</font> <a href="lattice2.html#K1" title="LATTICE2:func.1">.:</a></span>)</span></span><a href="filter_1.html#K7" title="FILTER_1:func.7">:]</a></span> ;<br/></div></div>
