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<span class="kw">let </span><font color="Maroon" title="c1">L</font> be   non  <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>   <a href="lattices.html#V5" title="LATTICES:attr.5">join-associative</a>   <a href="lattices.html#V6" title="LATTICES:attr.6">meet-commutative</a>   <a href="lattices.html#V8" title="LATTICES:attr.8">meet-absorbing</a>   <a href="lattices.html#V9" title="LATTICES:attr.9">join-absorbing</a>   <a href="robbins1.html#L4" title="ROBBINS1:struct.4">OrthoLattStr</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> ( <font color="Maroon" title="c1">L</font> is  <a href="robbins4.html#V1" title="ROBBINS4:attr.1">orthomodular</a>  implies <font color="Maroon" title="c1">L</font> is  <a href="robbins4.html#V2" title="ROBBINS4:attr.2">Orthomodular</a>  )</span><br/>

<span class="kw">assume </span><a NAME="E1:14_2_1"/>
<font color="Maroon" title="c1">L</font> is  <a href="robbins4.html#V1" title="ROBBINS4:attr.1">orthomodular</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c1">L</font> is  <a href="robbins4.html#V2" title="ROBBINS4:attr.2">Orthomodular</a> </span><br/>

<a NAME="E2:14_2_1"/><span class="kw">then </span>
 for <font color="Olive" title="b1">x</font>, <font color="Olive" title="b2">y</font> being   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">L</font> holds  <font color="Olive" title="b1">x</font> <a href="lattices.html#K1" title="LATTICES:func.1">"\/"</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Olive" title="b1">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="p2">(<span class="default"><font color="Olive" title="b1">x</font> <a href="lattices.html#K1" title="LATTICES:func.1">"\/"</a> <font color="Olive" title="b2">y</font></span>)</span></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">x</font> <a href="lattices.html#K1" title="LATTICES:func.1">"\/"</a> <font color="Olive" title="b2">y</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="robbins4.html#T6" target="_self" title="ROBBINS4:th.6">Th6</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:14_2_1"/>
<font color="Maroon" title="c1">L</font> is  <a href="robbins4.html#V2" title="ROBBINS4:attr.2">Orthomodular</a> 
 <span class="kw">by</span> <span class="lab"><a class="ref" href="robbins4.html#D2" target="_self" title="ROBBINS4:def.2">Def2</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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