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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E18">Th21</font></span>: <a NAME="T21"><span class="comment"><font color="firebrick">:: FILTER_0:21</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">L</font> being   <a href="lattices.html#NM1" title="LATTICES:NM.1">Lattice</a><br/>  for <font color="Olive" title="b2">F</font> being   <a href="filter_0.html#NM1" title="FILTER_0:NM.1">Filter</a> of <font color="Olive" title="b1">L</font> holds  <span class="p1"><a href="filter_0.html#K3" title="FILTER_0:func.3">&lt;.</a><span class="default"><font color="Olive" title="b2">F</font></span><a href="filter_0.html#K3" title="FILTER_0:func.3">.)</a></span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b2">F</font> <span class="kw">by</span> <span class="lab"><a class="ref" href="filter_0.html#D4" target="_self" onmouseover="rs('filter_0/D4')" onmouseout="rh()">Def4</a></span>;<br/></div></div>
