*定義 [#x0f9b7d0]
In topological spaces, a subset A is called sg-open (semi-generalized open) if for every [[semiclosed]] set F, the [[semiinterior]] contains F whenever A contains F.

*参考 [#g097d106]
R. Devi, K. Balachandran and H. Maki, ''Semigeneralized closed and generalized closed maps'', Mem. Fac. Sci. Kochi Univ. Ser.A (Maths), 14 (1993), 41-54.