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-poweredFile in questo prodotto:
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