English

On enumerating factorizations in reflection groups

Combinatorics 2018-11-19 v1 Representation Theory

Abstract

We describe an approach, via Malle's permutation Ψ\Psi on the set of irreducible characters Irr(W)\text{Irr}(W), that gives a uniform derivation of the Chapuy-Stump formula for the enumeration of reflection factorizations of the Coxeter element. It also recovers its weighted generalization by delMas, Reiner, and Hameister, and further produces structural results for factorization formulas of arbitrary regular elements.

Keywords

Cite

@article{arxiv.1811.06566,
  title  = {On enumerating factorizations in reflection groups},
  author = {Theo Douvropoulos},
  journal= {arXiv preprint arXiv:1811.06566},
  year   = {2018}
}

Comments

27 pages, comments very much welcome