On the Cohomology of Algebraic and Related Finite Groups.
On the composition factors of Weyl modules.
On the Congruence Subgroups Problem: Determination of the "Metaplectic Kernel".
On the Cuspidal Cohomology of the Bianchi Modular Groups.
On the Green polynomial of classical groups.
On the homology of the special linear group ove a number field.
On the K-Theory of Algebraically Closed Fields.
On the p-periodicity of arithmetic subgroups of general linear groups.
On the reflection representation in Springer's theory.
On the Top Betti Number of Subgroups of SL(n,Z).
On the Unipotent Characters of the Exceptional Groups Over Finite Fields.
On Virtual Properties and Group Extensions.
Orbits of the Weyl group and a theorem of DeConcini and Procesi
p-adic deformations of cohomology classes of subgroups of GL (N,Z).
Power reductivity over an arbitrary base.
Principe de Hasse pour les espaces principaux homogènes sous les groupes classiques sur un corps de dimension cohomologique virtuelle au plus 1.
Produits dans la cohomologie holomorphe des variétés de Shimura II: Calculs et applications.
Projective resolutions of representations of GL (n).
Quelques applications de la cohomologie d'intersection
Quiver varieties and Weyl group actions
The cohomology of Nakajima’s varieties is known to carry a natural Weyl group action. Here this fact is established using the method of intersection cohomology, in analogy with the definition of Springer’s representations.