Finiteness results for subgroups of finite extensions

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Pedro V. Silva (Autor) FCUP; Vítor Araújo (Autor) Outra; Mihalis Sykiotis (Autor) Outra

Revista

Título: Journal of Algebra

Vol. 423

Páginas: 592-614

ISSN: 0021-8693

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: P-009-Y2W

DOI: 10.1016/j.jalgebra.2014.10.033

Abstract (EN): We discuss in the context of finite extensions two classical theorems of Takahasi and Howson on subgroups of free groups. We provide bounds for the rank of the intersection of subgroups within classes of groups such as virtually free groups, virtually nilpotent groups or fundamental groups of finite graphs of groups with virtually polycyclic vertex groups and finite edge groups. As an application of our generalization of Takahasi's Theorem, we provide a uniform bound for the rank of the periodic subgroup of any endomorphism of the fundamental group of a given finite graph of groups with finitely generated virtually nilpotent vertex groups and finite edge groups.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 23