Ein Untergruppensatz für modulare Gruppen.
Elementary Abelian operator groups.
Embedding Theorems for Residually Finite Groups.
Estructura de Sylow de ciertos grupos localmente finitos.
Every -group with all subgroups normal-by-finite is locally finite
A group has all of its subgroups normal-by-finite if is finite for all subgroups of . The Tarski-groups provide examples of -groups ( a “large” prime) of nonlocally finite groups in which every subgroup is normal-by-finite. The aim of this paper is to prove that a -group with every subgroup normal-by-finite is locally finite. We also prove that if for every subgroup of , then contains an Abelian subgroup of index at most .
Examples of highly transitive permutation groups
Exemples de nil-algèbres et de groupes infinis
Existentially closed -groups
Existentially Closed Locally Finite Central Extensions: Multipliers and Local Systems.
Exponents of almost simple groups and an application to the restricted Burnside problem.