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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E34">Th38</font></span>: <a NAME="T38"><span class="comment"><font color="firebrick">:: FILTER_1:38</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 <br/> ( ( <font color="Olive" title="b1">L1</font> is   <a href="lattices.html#NM2" title="LATTICES:NM.2">D_Lattice</a> &amp; <font color="Olive" title="b2">L2</font> is   <a href="lattices.html#NM2" title="LATTICES:NM.2">D_Lattice</a> ) iff <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> is   <a href="lattices.html#NM2" title="LATTICES:NM.2">D_Lattice</a> )</div></div>
