English

Hall-Littlewood polynomials and a Hecke action on ordered set partitions

Combinatorics 2019-02-26 v3

Abstract

We construct an action of the Hecke algebra Hn(q)H_n(q) on a quotient of the polynomial ring F[x1,,xn]F[x_1, \dots, x_n], where F=Q(q)F = \mathbb{Q}(q). The dimension of our quotient ring is the number of kk-block ordered set partitions of {1,2,,n}\{1, 2, \dots, n \}. This gives a quantum analog of a construction of Haglund-Rhoades-Shimozono and interpolates between their result at q=1q = 1 and work of Huang-Rhoades at q=0q = 0.

Keywords

Cite

@article{arxiv.1709.07995,
  title  = {Hall-Littlewood polynomials and a Hecke action on ordered set partitions},
  author = {Jia Huang and Brendon Rhoades and Travis Scrimshaw},
  journal= {arXiv preprint arXiv:1709.07995},
  year   = {2019}
}

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11 pages