Locally Finite Groups and Their Subgroups with Small Centralizers
Event details
Date | 19.05.2017 |
Hour | 10:15 |
Speaker | Kivanc Ersoy, Kaiserslautern and Istanbul |
Location |
GR A3 31
|
Category | Conferences - Seminars |
Let $p$ be a prime and $G$ a locally finite group containing an elementary abelian $p$-subgroup $A$ of rank at least $3$ such that $C_{G}(A)$ is Chernikov (that is, a locally finite group satisfying minimal condition on subgroups) and $C_{G}(a)$ involves no infinite simple groups for any $a\in A*$. In this talk, we prove that G is almost locally soluble. To prove this result, we first give a
characterization of $PSL_{p}(k)$:
Theorem: An infinite simple locally finite group $G$ admits an elementary abelian $p$-group of automorphisms $A$ such that $C_{G}(A)$ is Chernikov and $C_{G}(a)$ involves no infinite simple groups for any $a\in A^{\sharp}$ if and only if $G$ is isomorphic to $PSL_{p}(k)$ for some locally finite field $k$ of characteristic different from $p$ and $A$ has order $p^{2}$.
This is a joint work with Mahmut Kuzucuoglu and Pavel Shumyatsky.
Practical information
- Informed public
- Free
- This event is internal
Organizer
- Donna Testerman