On finite same-invariant linear groups.
On Gauss sum characters of finite groups and generalized Bernoulli numbers
On Gel'fand-Graev characters of reductive groups with disconnected centre.
On general linear semigroups.
On invariants of a set of matrices.
On modules over the Hecke algebra of a p-adic group.
On representations of with algebras of invariants being complete intersections.
On semisimple classes and semisimple characters in finite reductive groups
In this article, we study the elements with disconnected centralizer in the Brauer complex associated to a simple algebraic group defined over a finite field with corresponding Frobenius map and derive the number of -stable semisimple classes of with disconnected centralizer when the order of the fundamental group has prime order. We also discuss extendibility of semisimple characters of the fixed point subgroup to their inertia group in the full automorphism group. As a consequence, we...
On Some Results of Atkin and Lehner.
On special pieces in the unipotent variety.
On strong reality of the unipotent Lie-type subgroups over a field of characteristic 2.
On Structure of Weyl Modules.
On systems of linear inequalities
We show in detail that the category of general Roth systems or the category of semi-stable systems of linear inequalities of slope zero is a neutral Tannakian category. On the way, we present a new proof of the semi-stability of the tensor product of semi-stable systems. The proof is based on a numerical criterion for a system of linear inequalities to be semi-stable.
On the average values of the irreducible characters of finite groups of Lie type on geometric unipotent classes.
On the “Bruhat graph” of a Coxeter system
On the character variety of group representations in SL (2, C) and PSL (2, C).
On the Collapsing of Homogeneous Bundles.
On the composition factors of Weyl modules.
On the decomposition numbers of the finite unitary groups in non-defining characteristic.
On the Finiteness of the Number of Unipotent Classes.