Last-modified: 2010-12-07 (火) 15:05:04
For given closed set F and semiopen cover U of F, there exists a finite subfamily V of U such that the closures of the members of V covers F.
G.L. Garg and D. Sivaraj, On Sc-compact and s-closed spaces, Boll. UMI (6), 3-B (1984), 321-32.