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Last-modified: 2011-04-16 (土) 19:59:17

Definition Edit

  • A topological space (X,τ) is said to be Λ^s_δ-D_2 if for any distinct pair of points x and y of X there exists disjoint Λ^s_δ-D sets G and E of X containing x and y, respectively.

Property Edit

Reference Edit

  • Caldas, M.; Ganster, M.; Georgiou, D. N.; Jafari, S.; Moshokoa, S. P., δ-semiopen sets in topology. (English summary), Proceedings of the 19th Summer Conference on Topology and its Applications., Topology Proc. 29 (2005), no. 2, 369–383.