On the existence of complements in a group to some abelian normal subgroups

• Published in: Algebra and Discrete Mathematics
• Date: 2010
• Main Authors: Dixon, M.R., Kurdachenko, L.A., Javier Otal
• Format: Article
• Language: English
• Published: Інститут прикладної математики і механіки НАН України 2010
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/154605
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: On the existence of complements in a group to some abelian normal subgroups / M.R. Dixon, L.A. Kurdachenko, Javier Otal // Algebra and Discrete Mathematics. — 2010. — Vol. 10, № 1. — С. 18–41. — Бібліогр.: 32 назв. — англ.

A complement to a proper normal subgroup H of a group G is a subgroup K such that G=HK and H∩K=⟨1⟩. Equivalently it is said that G splits over H. In this paper we develop a theory that we call hierarchy of centralizers to obtain sufficient conditions for a group to split over a certain abelian subgr...