...-Ringstrukturen auf dem Burnsidering der Permutationsdarstellungen einer endlichen Gruppe.
Sequences in non-Abelian groups with distinct partial products.
Sharply 2- and 3-transitive groups with kernels of finite index.
Some commutativity criteria. - II
Some families of finite groups and their rings of invariants
Some new results in probalistic group theory.
Statistiques sur le groupe symétrique
Sums of sets of group elements
The basic construction from the conditional expectation on the quantum double of a finite group
Let be a finite group and a subgroup. Denote by (or ) the crossed product of and (or ) with respect to the adjoint action of the latter on the former. Consider the algebra generated by and , where we regard as an idempotent operator on for a certain conditional expectation of onto . Let us call the basic construction from the conditional expectation . The paper constructs a crossed product algebra , and proves that there is an algebra isomorphism between and .
The Number of Solutions of x3 = 1 in a 3-Group.
Über die Relationenmoduln einer endlichen Gruppe.
Über die Stabilitätsgruppen der Untergruppenreihen einer endlichen Gruppe.
Über die Struktur einer Klasse von auflösbaren Gruppen.
Über die Struktur einer Klasse von auflösbaren Gruppen II.
Über eine n-dimensionale Permutationspolynomgruppe.
Ulm Invariants of the Brauer Group of a Field.
Ulm Invariants of the Brauer Group of a Field. II.
Verlagerung und normale Fittingklassen endlicher Gruppen.
Verschränkte Homomorphismen endlicher Gruppen.
Vorzeichen von Automorphismen endlicher Gruppen und Beispiele normaler Fittingklassen.