On groups whose subgroups are closed in the profinite topology

• Autores: Derek J. S. Robinson, Alessio Russo, G. Vincenzi
• Localización: Journal of pure and applied algebra, ISSN 0022-4049, Vol. 213, Nº 4, 2009, págs. 421-429
• Idioma: inglés
• DOI: 10.1016/j.jpaa.2008.07.015
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• Resumen

  • Abstract A group is called extended residually finite (ERF) if every subgroup is closed in the profinite topology. The ERF-property is studied for nilpotent groups, soluble groups, locally finite groups and FC-groups. A complete characterization is given of FC-groups which are ERF.