Alternating permutations with restrictions and standard Young tableaux

Details Alternating permutations with restrictions and standard Young tableaux Alternating permutations with restrictions and standard Young tableaux

2012-03-21

arxiv.org/abs/1203.4653v1

Mathematics

Combinatorics

Scientific paper

In this paper, we give bijections between the set of 4123-avoiding down-up alternating permutations of length $2n$ and the set of standard Young tableaux of shape $(n,n,n)$, and between the set of 4123-avoiding down-up alternating permutations of length $2n-1$ and the set of shifted standard Young tableaux of shape $(n+1, n, n-1)$ via an intermediate structure of Yamanouchi words. Moreover, we get the enumeration of 4123-avoiding up-down alternating permutations of even and odd length by presenting bijections between 4123-avoiding up-down alternating permutations and standard Young tableaux.

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