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<b>let </b><font color="Maroon" title="c1">a</font>, <font color="Maroon" title="c2">b</font>, <font color="Maroon" title="c3">c</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <a href="nat_lat.html#K11" title="NAT_LAT:func.11">NatPlus_Lattice</a> ;<br/>

<b>set </b><font color="Maroon" title="c4">l</font> = <font color="Maroon" title="c2">b</font> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <font color="Maroon" title="c3">c</font>;<br/>
<b>set </b><font color="Maroon" title="c5">k</font> = <font color="Maroon" title="c1">a</font> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <font color="Maroon" title="c2">b</font>;<br/>
<b>thus </b><font color="Maroon" title="c1">a</font> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <span class="p1">(<span class="default"><font color="Maroon" title="c2">b</font> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <font color="Maroon" title="c3">c</font></span>)</span> = 
<span class="p1">(<span class="default"><a href="nat_lat.html#K12" title="NAT_LAT:func.12">@</a> <font color="Maroon" title="c1">a</font></span>)</span> <a href="nat_d.html#K8" title="NAT_D:func.8">hcf</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="nat_lat.html#K12" title="NAT_LAT:func.12">@</a> <font color="Maroon" title="c2">b</font></span>)</span> <a href="nat_d.html#K8" title="NAT_D:func.8">hcf</a> <span class="p2">(<span class="default"><a href="nat_lat.html#K12" title="NAT_LAT:func.12">@</a> <font color="Maroon" title="c3">c</font></span>)</span></span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><font color="Maroon" title="c1">a</font> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <font color="Maroon" title="c2">b</font></span>)</span> <a href="lattices.html#K2" title="LATTICES:func.2">"/\"</a> <font color="Maroon" title="c3">c</font>
<b>by </b><i><a class="ref" href="newton.html#T61" title="NEWTON:th.61">NEWTON:61</a></i>
;<br/>


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