Some group theoretic problems inspired by ring theoretic analogies.
Some infinite p-groups.
Some lattice properties of normal-by-finite subgroups
A subgroup of a group is said to be normal-by-finite if the core of in has finite index in . It has been proved by Buckley, Lennox, Neumann, Smith and Wiegold that if every subgroup of a group G is normal-by-finite, then is abelian-by-finite, provided that all its periodic homomorphic images are locally finite. The aim of this article is to describe the structure of groups G for which the partially ordered set consisting of all normal-by-finite subgroups satisfies certain relevant...
Su certe classi di gruppi unipotenti
Si presentano alcuni risultati che caratterizzano i gruppi algebrici unipotenti aventi come reticolo dei sottogruppi connessi una catena e si discutono alcuni risultati conseguenti.
Su una classe di gruppi con molti sottogruppi quasinormali
Subgroup Lattices for Crystallographic Groups
Subgroups normalized by the commutator subgroup of the Levi subgroup.
Subgroups of finite index in generalized -groups
Subgroups of finite index in nilpotent groups.
Subgroups of split orthogonal groups. II.
Subgroups of the Clifford group.
Subgroups of the orthogonal groups of even degree over a local field.
Subnormal composition factors of infinite groups
Subnormal subgroups of 3-dimensional Poincaré duality groups.
Sui gruppi con molti sottogruppi subnormali
Sui gruppi relativamente complementati
Sui gruppi relativamente complementati
Sui gruppi risolubili complementati
Sulle S-partizioni strette nei gruppi localmente finiti
A characterization of strict S-partitions in locally finite groups is given.
Supplemented nilpotent groups