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Some weak separation axioms. (English) Zbl 0736.54013

Summary: Pre-open sets are used to define some weak separation axioms and to study some of their basic properties. The implications of these axioms among themselves and with the known axioms \(T_ i\) and semi-\(T_ i\) (i=0,1,2) are investigated.

MSC:

54D10 Lower separation axioms (\(T_0\)–\(T_3\), etc.)

Keywords:

pre-open sets
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