×

On \(\delta D\)-sets and associated weak separation axioms. (English) Zbl 1185.54024

Summary: N. V. Velichko [Am. Math. Soc., Transl., II. Ser. 78, 103–118 (1968); translation from Mat. Sb., n. Ser. 70(112), 98–112 (1966; Zbl 0178.56503)] introduced the notions of \(\delta\)-open sets and \(\delta\)-closure. In this paper, we introduce some weak separation axioms by utilizing sets and the operator.

MSC:

54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.)

Citations:

Zbl 0178.56503
PDFBibTeX XMLCite
Full Text: EuDML EMIS