Multiplikationen mit großen Automorphismengruppen.
Nilpotent Singer groups.
Normal Subgroups of Finitary Permutation Groups.
Normal Subgroups of Triply Transitive Permutation Groups of Degree Divisible by 3.
Normal Subgroups of Triply-Transitive Permutation Groups of Odd Degree.
Normalteiler in 3-transitiven Gruppen.
Note sur les bases du groupe symétrique.
On a conjecture of M. E. Watkins on graphical regular representations of finite groups
On a constant of Turán and Erdös
On a hierarchy of groups of computable automorphisms.
On a Theorem of Livingstone and Wagner.
On automorphism groups of boolean algebras
On automorphism groups of planar lattices
The structure of automorphisms of planar lattices is analyzed.
On automorphisms of algebras with a single unary operation
On automorphisms of Weyl algebra
On B-injectors of symmetric groups Sₙ and alternating groups Aₙ: a new approach
The aim of this paper is to introduce the notion of BG-injectors of finite groups and invoke this notion to determine the B-injectors of Sₙ and Aₙ and to prove that they are conjugate. This paper provides a new, more straightforward and constructive proof of a result of Bialostocki which determines the B-injectors of the symmetric and alternating groups.
On certain characterizations of barely transitive groups
On Certain Classes of rigid groups
On Certain Maximal Subgroups of Symmetric or Alternating Groups.
On chirality groups and regular coverings of regular oriented hypermaps
We prove that if the Walsh bipartite map of a regular oriented hypermap is also orientably regular then both and have the same chirality group, the covering core of (the smallest regular map covering ) is the Walsh bipartite map of the covering core of and the closure cover of (the greatest regular map covered by ) is the Walsh bipartite map of the closure cover of . We apply these results to the family of toroidal chiral hypermaps induced by the family of toroidal bipartite maps...