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<td style ="vertical-align: top;" ><a
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style ="text-align: center; vertical-align: top; color: rgb(0, 0, 102);" ><big ><span
style ="font-weight: bold;" >About HAP: Noncrossing Partitions<br >
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<td style ="text-align: right; vertical-align: top;" ><a
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<td
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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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<img style ="width: 1232px; height: 405px;" alt=""
src="ncplogged.png" ><br >
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