Modules over Group Algebras and Their Application in the Study of Semi -Simplicity.
Moduln und verschränkte Homomorphismen endlicher Gruppen.
Morita equivalence for blocks of finite general linear groups.
Multiple Tilings of n-Dimensional Space by Unit Cubes.
Nilpotent blocks and their source algebras.
Non-commutative matrix integrals and representation varieties of surface groups in a finite group
A new formula is established for the asymptotic expansion of a matrix integral with values in a finite-dimensional von Neumann algebra in terms of graphs on surfaces which are orientable or non-orientable.
Normal p-Complements and Irreducible Characters.
Note on the Integral Group Ring Problem.
On a Conjecture of Zassenhaus on Torsion Units in Integral Group Rings.
On certain ideals of the group ring
On Cohomological Periodicity of ZG-Lattices.
On existing of filtered multiplicative bases in group algebras.
On faithful projective representations of finite abelian p-groups over a field of characteristic p
Let G be a noncyclic abelian p-group and K be an infinite field of finite characteristic p. For every 2-cocycle λ ∈ Z²(G,K*) such that the twisted group algebra is of infinite representation type, we find natural numbers d for which G has infinitely many faithful absolutely indecomposable λ-representations over K of dimension d.
On Huppert's theorem.
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 Lie powers of regular modules in characteristic 2
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 perfect isometries and isotypies in finite groups.
On Signatures of Green Functors.