Quiver Presentations for Descent Algebras of Exceptional Type
arXiv:0810.2743
Abstract
The descent algebra of a finite Coxeter group 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 , , , , , or .
25 pages, 10 figures