In this paper the A-closure operator introduced by Salbany, is studied when A=US or SUS. A characterisation of US-closed (US= spaces in which every sequence has at most one limit)and SUS-closed (SUS= spaces in which every convergent sequence has a unique accumulation point) sets is given and it is proved that the category SUS is cowell-powered

US-spaces and closure operators

TOZZI, Anna
1986-01-01

Abstract

In this paper the A-closure operator introduced by Salbany, is studied when A=US or SUS. A characterisation of US-closed (US= spaces in which every sequence has at most one limit)and SUS-closed (SUS= spaces in which every convergent sequence has a unique accumulation point) sets is given and it is proved that the category SUS is cowell-powered
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/7244
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact