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<b>let </b><font color="Maroon">L</font> be  non <a href="struct_0.html#V3">empty</a> <a href="lattice3.html#V1">with_suprema</a> <a href="lattice3.html#V2">with_infima</a> <a href="oposet_1.html#V14">PartialOrdered</a>  <a href="oposet_1.html#L1">OrthoRelStr</a> ;<br/><b>let </b><font color="Maroon">a</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>, <font color="Maroon">b</font> be   <a href="struct_0.html#NM1">Element</a> of <font color="Maroon">L</font>;<br/>



<b>assume </b><a NAME="E1:84"/><i><font color="Green">E22</font></i>: 
<font color="Maroon">a</font> <a href="orders_2.html#R3">&lt;=</a> <font color="Maroon">b</font>
 ;<br/>

<a NAME="E2:84"/><b>then </b>
<font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <font color="Maroon">b</font> <a href="robbins3.html#NK4" target="_self">"|_|"</a> <font color="Maroon">a</font>
 
<b>by </b><i><a class="ref" href="yellow_0.html#T24">YELLOW_0:24</a></i>;<br/>
<b>hence </b><a NAME="E3:84"/>
( <font color="Maroon">b</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> <a href="robbins3.html#NK4" target="_self">"|_|"</a> <font color="Maroon">b</font> &amp; <font color="Maroon">a</font> <a href="hidden.html#R1">=</a> <font color="Maroon">a</font> <a href="robbins3.html#NK3" target="_self">"|^|"</a> <font color="Maroon">b</font> )
 <b>by </b><i><a class="ref" href="robbins3.html#T5" target="_self">Th5</a>, <a class="ref" href="lattice3.html#T13">LATTICE3:13</a>, <a class="ref" href="yellow_0.html#T25">YELLOW_0:25</a></i>;<br/>


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