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arXiv · 0704.2732

Brauer Algebras of Simply Laced Type

Arjeh M Cohen·Bart Frenk·David Wales
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Abstract

The diagram algebra introduced by Brauer that describes the centralizer algebra on tensor products of the natural representation of an orthogonal group has a presentation by generators and relations that only depends on the graph of type An on n nodes. Here we describe an algebra depending on an arbitrary graph of type M. We study its structure when the type is An, Dn, E6, E7, E8. We determine the representations and find the dimensions. The algebra is generically semisimple and contains the group algebra of the Coxeter type M as a subalgebra. It is a ring homomorphism of the Birman-Murakami-Wenzl algebra of these types. This fact will be used in later work determining the structure of Birman-Murakami-Wenzl algebras of simply laced spherical type.

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BibTeXRIS

Arjeh M Cohen, Bart Frenk, David Wales. 2007-04-26. Brauer Algebras of Simply Laced Type. https://arxiv.org/abs/0704.2732

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