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COMBINATORICS
2007
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13 years 11 months ago
Wreath Products of Permutation Classes
A permutation class which is closed under pattern involvement may be described in terms of its basis. The wreath product construction X Y of two permutation classes X and Y is als...
Robert Brignall
COMBINATORICS
2007
74views more  COMBINATORICS 2007»
13 years 11 months ago
Statistics on the Multi-Colored Permutation Groups
We define an excedance number for the multi-colored permutation group i.e. the wreath product (Zr1 × · · · × Zrk ) Sn and calculate its multi-distribution with some natural ...
Eli Bagno, Ayelet Butman, David Garber