*Definition [#z474262e]
-A function f:X → Y is said to be pre-semi-closed if the image of every [[semiclosed]] subset of X is [[semiclosed]] in Y.

*Reference [#cad3d492]
-Arya, S.P.; Nour, T.M., ''Weakly semi-R_0 spaces.'', (English) [J] Indian J. Pure Appl. Math. 21, No.12, 1083-1085 (1990).