Document Type : Original Article


1. Levine, N., Semi-open sets and semi-continuity in topological spaces. The American Mathematical Monthly, 1963. 70(1): p. 36-41.
2. Levine, N., Generalized closed sets in topology. Rendiconti del Circolo Matematico di Palermo, 1970. 19(1): p. 89-96.
3. Bhattacharyya, P., Semi-generalized closed sets in topology. Indian J. Math., 1987. 29(3): p. 375-382.
4. Kasahara, S., Operation-compact spaces. Math. Japon., 1979. 24: p. 97-105.
5. B. Ahmad, S.H., Properties of γ-operations in topological spaces. Aligarh Bull. Math, 2003: p. 45-51.
6. F.Namiq, S., New types of continuity and separation axiom based operation in topological spaces. 2011, Sulaimani