Locally finite groups and their subgroups with small centralizers
JOURNAL OF ALGEBRA, cilt.481, ss.1-11, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 481
- Basım Tarihi: 2017
- Doi Numarası: 10.1016/j.jalgebra.2017.02.018
- Dergi Adı: JOURNAL OF ALGEBRA
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1-11
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
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 and C-G(a) involves no infinite simple groups for any a is an element of A(#). We show that G is almost locally soluble (Theorem 1.1). The key step in the proof is the following characterization of PSLp(k): 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) Keywords: involves no infinite simple groups for any a is an element of A(#) if and only Locally finite group if G is isomorphic to PSLp(k) for some locally finite field k Centralizer of characteristic different from p and A has order p(2). (C) 2017 Published by Elsevier Inc.