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Last-modified: 2011-02-19 (土) 16:48:14

Definition Edit

  • Let (X,τ) be a topological space. A subset S of X is said to be α-set if S ⊂ Int(cl(Int(S))).

Reference Edit

  • El-Deeb, N.; Hasanein, I. A.; Mashhour, A. S.; Noiri, T. , On p-regular spaces., Bull. Math. Soc. Sci. Math. R. S. Roumanie (N.S.) 27(75) (1983), no. 4, 311–315.