On a conjecture of Alperin and McKay.
Rational tori, semisimple orbits and the topology of hyperplane complements.
Generic chain complexes and finite Coxeter groups.
Cellular algebras.
The split building of a reductive group.
The characters of the group of rational points of a reductive group with non-connected centre.
On Gel'fand-Graev characters of reductive groups with disconnected centre.
Spherical Buildings and the Character of the Steinberg Representation.
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