English

Quiver Presentations for Descent Algebras of Exceptional Type

Representation Theory 2008-10-16 v1 Combinatorics

Abstract

The descent algebra of a finite Coxeter group WW is a basic algebra, and as such it has a presentation as quiver with relations. In recent work, we have developed a combinatorial framework which allows us to systematically compute such a quiver presentation for a Coxeter group of a given type. In this article, we use that framework to determine quiver presentations for the descent algebras of the Coxeter groups of exceptional or non-crystallographic type, i.e., of type E6E_6, E7E_7, E8E_8, F4F_4, H3H_3, H4H_4 or I2(m)I_2(m).

Keywords

Cite

@article{arxiv.0810.2743,
  title  = {Quiver Presentations for Descent Algebras of Exceptional Type},
  author = {Goetz Pfeiffer},
  journal= {arXiv preprint arXiv:0810.2743},
  year   = {2008}
}

Comments

25 pages, 10 figures

R2 v1 2026-06-21T11:31:07.846Z