Last-modified: 2010-12-08 (水) 02:55:50
- A topological space (X,τ) is called semi-D_2 if for any distinct pair of points x and y of X , there exist disjoint sD-sets .
- If (X,τ) is semi-D_2, then it is semi-D_1.
- Athisaya Ponmani, S.; Lellis Thivagar, M., Another form of separation axioms. , (English) [J] Methods Funct. Anal. Topol. 13, No. 4, 380-385 (2007).