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<b>let </b><font color="Maroon" title="c1">L</font> be  non <a href="struct_0.html#V3" title="STRUCT_0:attr.3">empty</a> <a href="lattice3.html#V1" title="LATTICE3:attr.1">with_suprema</a> <a href="lattice3.html#V2" title="LATTICE3:attr.2">with_infima</a> <a href="oposet_1.html#V14" title="OPOSET_1:attr.14">PartialOrdered</a>  <a href="oposet_1.html#L1" title="OPOSET_1:struct.1">OrthoRelStr</a> ;<br/><b>let </b><font color="Maroon" title="c2">a</font>, <font color="Maroon" title="c3">b</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">L</font>;<br/>



<b>assume </b><a NAME="E1:84"/><i><font color="Green" title="E31">A1</font></i>: 
<font color="Maroon" title="c2">a</font> <a href="orders_2.html#R3" title="ORDERS_2:pred.3">&lt;=</a> <font color="Maroon" title="c3">b</font>
 ;<br/>

<a NAME="E2:84"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">b</font> <a href="robbins3.html#NK4" title="ROBBINS3:NK.4">"|_|"</a> <font color="Maroon" title="c2">a</font>
 
<b>by </b><i><a class="ref" href="yellow_0.html#T24" title="YELLOW_0:th.24">YELLOW_0:24</a></i>;<br/>
<b>hence </b><a NAME="E3:84"/>
( <font color="Maroon" title="c3">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">a</font> <a href="robbins3.html#NK4" title="ROBBINS3:NK.4">"|_|"</a> <font color="Maroon" title="c3">b</font> &amp; <font color="Maroon" title="c2">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">a</font> <a href="robbins3.html#NK3" title="ROBBINS3:NK.3">"|^|"</a> <font color="Maroon" title="c3">b</font> )
 <b>by </b><i><a class="txt" href="robbins3.html#E1:84"><i><font color="Green" title="E31">A1</font></i></a>, <a class="ref" href="lattice3.html#T13" title="LATTICE3:th.13">LATTICE3:13</a>, <a class="ref" href="yellow_0.html#T25" title="YELLOW_0:th.25">YELLOW_0:25</a></i>;<br/>


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