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<div><span class="kw">theorem </span><a NAME="T3"><span class="comment"><font color="firebrick">:: NELSON_1:3</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">L</font> being   <a href="nelson_1.html#NM2" title="NELSON_1:NM.2">Quasi-Boolean_Algebra</a> holds  <span class="p1">(<span class="default"><a href="lattices.html#K5" title="LATTICES:func.5">Bottom</a> <font color="Olive" title="b1">L</font></span>)</span> <a href="robbins1.html#K3" title="ROBBINS1:func.3">`</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="lattices.html#K6" title="LATTICES:func.6">Top</a> <font color="Olive" title="b1">L</font></div></div>
