*Definition [#p3c5843b]
-A subset A of topological space (X,τ) is called generalized closed (in short g-closed) if cl(A) ⊂ U whenever A ⊂ U and U is open in X.

*Reference [#l1e3f26a]
-Basu, C. K.; Afsan, B. M. Uzzal; Ghosh, M. K., ''A class of functions and separation axioms with respect to an operation.'' (English summary), Hacet. J. Math. Stat. 38 (2009), no. 2, 103-118.