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<b>let </b><font color="Maroon" title="c1">L</font> be  <a href="orders_2.html#V5" title="ORDERS_2:attr.5">antisymmetric</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="orders_2.html#L1" title="ORDERS_2:struct.1">RelStr</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>thus </b><font color="Maroon" title="c2">a</font> <a href="yellow_5.html#K2" title="YELLOW_5:func.2">\+\</a> <font color="Maroon" title="c3">b</font> = 
<span class="p1">(<span class="default"><font color="Maroon" title="c2">a</font> <a href="yellow_5.html#K1" title="YELLOW_5:func.1">\</a> <font color="Maroon" title="c3">b</font></span>)</span> <a href="lattice3.html#K13" title="LATTICE3:func.13">"\/"</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">b</font> <a href="yellow_5.html#K1" title="YELLOW_5:func.1">\</a> <font color="Maroon" title="c2">a</font></span>)</span>

<br/>.= 
<font color="Maroon" title="c3">b</font> <a href="yellow_5.html#K2" title="YELLOW_5:func.2">\+\</a> <font color="Maroon" title="c2">a</font>

;<br/>


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