Last-modified: 2010-12-08 (水) 02:27:59
- A topological space (X,τ) is said to be α-T_2 if for any distinct pair of points x and y in X, there exist α-open sets U and V in X containing x and y, respectively, such that
- Caldas, M.; Georgiou, D. N.; Jafari, S. , Characterizations of low separation axioms via α-open sets and α-closure operator., (English summary) Bol. Soc. Parana. Mat. (3) 21 (2003), no. 1-2, 97–111.