Quiver Presentations for Descent Algebras of Exceptional Type

Details Quiver Presentations for Descent Algebras of Exceptional Type Quiver Presentations for Descent Algebras of Exceptional Type

2008-10-15

arxiv.org/abs/0810.2743v1

Mathematics

Representation Theory

25 pages, 10 figures

Scientific paper

The descent algebra of a finite Coxeter group $W$ 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 $E_6$, $E_7$, $E_8$, $F_4$, $H_3$, $H_4$ or $I_2(m)$.

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