λ-D_2

Definition

• A topological space (X,τ) is said to be λ-D_2 if for any x, y ∈ X such that there
  exist disjoint λ-D-sets G and E such that x ∈ G and y ∈ E.

Property

• λ_D_2 ⇔ λ-D_1.

Reference

• Caldas Miguel, Jafari Saeid, Navalagi Govindappa, More on λ-closed sets in topological spaces.,Rev. Colombiana Mat. 41 (2007), no. 2, 355-369.