Definition
- A topological space (X,τ) is R_T iff for each x in X, both are degenerate. Here, is the intersection of all open sets containing x.
Property
Reference
- Tong, Jing Cheng, On the separation axiom R0. (Serbo-Croatian summary), Glas. Mat. Ser. III 18(38) (1983), no. 1, 149–152.