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.
On the automorphism group of Solomon's descent algebra.
On the closed left ideals of the group algebra
On the decomposition map of Grothendieck groups.
On the equivariant homotopy of spheres [Book]
On the finiteness obstruction of certain periodic groups.
On the Isomorphism of Group Algebras.
On the isomorphism problem for modular group algebras of elementary abelian-by-cyclic p-groups
Let G be a finite p-group and let F be the field of p elements. It is shown that if G is elementary abelian-by-cyclic then the isomorphism type of G is determined by FG.
On the Jacobson radical of graded rings
All commutative semigroups are described such that the Jacobson radical is homogeneous in each ring graded by .