Λ^s_δ-neat point

Definition

• Let (X,τ) be a topological space. A point x ∈ X which has only X as the (Λ,sδ)-neighborhood is called a Λ^s_δ-neat point.

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.