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The values of a linear form on a set of permutations

✍ Scribed by D. A. Suprunenko


Publisher
Springer US
Year
1972
Tongue
English
Weight
350 KB
Volume
4
Category
Article
ISSN
1573-8337

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πŸ“œ SIMILAR VOLUMES


The Excedance Set of a Permutation
✍ Richard Ehrenborg; Einar Steingrı́msson πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 124 KB

The excedance set of a permutation Ο€ = Ο€ 1 Ο€ 2 β€’ β€’ β€’ Ο€ n is the set of indices i for which Ο€ i > i. We give a formula for the number of permutations with a given excedance set and recursive formulas satisfied by these numbers. We prove log-concavity of certain sequences of these numbers and we show