Definition
- A topological space (X,τ) is said to be almost-regular if for each point x in X and each regularly closed set A not containing x, there exist disjoint open sets such that .
Reference
- Singal, M. K.; Prabha Arya, Shashi, On almost-regular spaces. (Serbo-Croatian summary), Glasnik Mat. Ser. III 4 (24) 1969 89–99.