On Groups with Several Doubly-Transitive Permuation Representations.
On Huppert's theorem.
On hypersurface quotient singularities of dimension 4.
On indecomposable projective representations of finite groups over fields of characteristic p > 0
Let G be a finite group, F a field of characteristic p with p||G|, and the twisted group algebra of the group G and the field F with a 2-cocycle λ ∈ Z²(G,F*). We give necessary and sufficient conditions for to be of finite representation type. We also introduce the concept of projective F-representation type for the group G (finite, infinite, mixed) and we exhibit finite groups of each type.
On Irreducibel Representations of p-soluble Groups in Characteristic p.
On irreducible projective representations of finite groups.
On Isoclinic Groups.
On isomorphic commutative group algebras of Abelian groups with -projective quotients.
On Lie powers of regular modules in characteristic 2
On Mackey's Imprimitivity Theorem.
On minimal Artinian modules and minimal Artinian linear groups.
On minimal permutation representations of classical simple groups.
On modular projective representations of finite nilpotent groups
Our aim is to determine necessary and sufficient conditions for a finite nilpotent group to have a faithful irreducible projective representation over a field of characteristic p ≥ 0.
On monomial groups.
On monomial p...-representations of finite p-groups.
On multipliers of Heineken-Mohamed type groups
On Parabolic Subgroups and Hecke Algebras of some Fractal Groups
* The authors thank the “Swiss National Science Foundation” for its support.We study the subgroup structure, Hecke algebras, quasi-regular representations, and asymptotic properties of some fractal groups of branch type. We introduce parabolic subgroups, show that they are weakly maximal, and that the corresponding quasi-regular representations are irreducible. These (infinite-dimensional) representations are approximated by finite-dimensional quasi-regular representations. The Hecke algebras...
On parametrization of the linear and unitary groups in terms of Dirac matrices.
On perfect isometries and isotypies in finite groups.
On Prime Ideals in Representation Rings.