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COMBINATORICS
2000
129views more  COMBINATORICS 2000»
13 years 4 months ago
Combinatorial statistics on type-B analogues of noncrossing partitions and restricted permutations
We define type-B analogues of combinatorial statistics previously studied on noncrossing partitions and show that analogous equidistribution and symmetry properties hold in the ca...
Rodica Simion
DM
2006
91views more  DM 2006»
13 years 4 months ago
Restricted Dumont permutations, Dyck paths, and noncrossing partitions
We complete the enumeration of Dumont permutations of the second kind avoiding a pattern of length 4 which is itself a Dumont permutation of the second kind. We also consider some ...
Alexander Burstein, Sergi Elizalde, Toufik Mansour