Miguel Caldas Cueva

090. An Alexandroff Spaces Defined By $\delta$-Preopen Sets

Math. Journal: Bull. Fukuoka Univ. Educ., Part III, ISSN 0532-811X, v. 54, n. 3, p. 1-6, 2005.
Authors: Caldas, M., Fukutake, T., Jafari, S., and  Noiri, T