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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E2">Th1</font></span>: <a NAME="T1"><span class="comment"><font color="firebrick">:: NELSON_1:1</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><br/>  for <font color="Olive" title="b2">x</font>, <font color="Olive" title="b3">y</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Olive" title="b1">L</font> holds  <span class="p1">(<span class="default"><font color="Olive" title="b2">x</font> <a href="lattices.html#K3" title="LATTICES:func.3">"\/"</a> <font color="Olive" title="b3">y</font></span>)</span> <a href="robbins1.html#K3" title="ROBBINS1:func.3">`</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><font color="Olive" title="b2">x</font> <a href="robbins1.html#K3" title="ROBBINS1:func.3">`</a></span>)</span> <a href="lattices.html#K4" title="LATTICES:func.4">"/\"</a> <span class="p1">(<span class="default"><font color="Olive" title="b3">y</font> <a href="robbins1.html#K3" title="ROBBINS1:func.3">`</a></span>)</span></div></div>
