New interpretations for noncrossing partitions of classical types

Details New interpretations for noncrossing partitions of classical types New interpretations for noncrossing partitions of classical types

2009-10-11

arxiv.org/abs/0910.2036v2

J. Combin. Theory Ser. A 118 (2011) 1168-1189

Mathematics

Combinatorics

21 pages, 15 figures, final version

Scientific paper

We interpret noncrossing partitions of type $B$ and type $D$ in terms of noncrossing partitions of type $A$. As an application, we get type-preserving bijections between noncrossing and nonnesting partitions of type $B$, type $C$ and type $D$ which are different from those in the recent work of Fink and Giraldo. We also define Catalan tableaux of type $B$ and type $D$, and find bijections between them and noncrossing partitions of type $B$ and type $D$ respectively.

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