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.
Biagioli R, Jouhet F, Nadeau P (2017). 321-avoiding affine permutations, heaps, and periodic parallelogram polyominoes. ELECTRONIC NOTES IN DISCRETE MATHEMATICS, 59, 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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