Definition
- A topological space (X, τ) is said to be λ-T_0 if for x, y ∈ X such that there exists an λ-open set containing x but not y or a λ-open set containing y but not x .
Property
- λ-T_0 ⇔ λ-D_0.
Reference
- Caldas Miguel, Jafari Saeid, Navalagi Govindappa, More on λ-closed sets in topological spaces.,Rev. Colombiana Mat. 41 (2007), no. 2, 355-369.