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Generalized descent algebra and construction of irreducible characters of hyperoctahedral groups

Cedric Bonnafe, Christophe Hohlweg

math.COarXiv:math/0409199

Abstract

We construct a subalgebra of dimension 2.3n-1 of the group algebra of a Weyl group of type Bn containing its Solomon descent's algebra but also the Solomon's descent algebra of the symmetric group. This lead us to a construction of the irreducible characters of the hyperoctahedral groups by using a generalized plactic equivalence.

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