Λ^s_δ-D_2

Definition

• 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

• Λ^s_δ-D_2 ⇔ Λ^s_δ-D_1

Reference

• 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.