We give exact formulas for the bivariate generating series of 321-avoiding affine permutations with respect to rank and Coxeter length. We use two different combi- natorial approaches, both based on the theory of heaps of pieces.
321-avoiding affine permutations, heaps, and periodic parallelogram polyominoes / Biagioli R; Jouhet F; Nadeau P. - In: ELECTRONIC NOTES IN DISCRETE MATHEMATICS. - ISSN 1571-0653. - ELETTRONICO. - 59:(2017), pp. 115-130. [10.1016/j.endm.2017.05.009]
321-avoiding affine permutations, heaps, and periodic parallelogram polyominoes
Biagioli R;
2017
Abstract
We give exact formulas for the bivariate generating series of 321-avoiding affine permutations with respect to rank and Coxeter length. We use two different combi- natorial approaches, both based on the theory of heaps of pieces.File in questo prodotto:
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