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style="font-weight: bold;">About HAP: Noncrossing Partitions<br>
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Brady and Column Watt have introduced the notion of a non-crossing
partitions lattice for an arbitrary finite reflection group W. The
following commands show how to display this lattice for the reflection
group H<sub>3</sub>.<br>
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style="background-color: rgb(255, 255, 204); vertical-align: top;">gap>
D:=[[1,[2,3]],[2,[3,5]]];;<br>
gap> CoxeterDiagramDisplay(D);<br>
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NoncrossingPartitionsLatticeDisplay(D);<br>
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src="ncplogged.png"><br>
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