Dontchev, Julian; Ganster, Maximilian; Noiri, Takashi Unified operation approach of generalized closed sets via topological ideals. (English) Zbl 0991.54043 Math. Jap. 49, No. 3, 395-401 (1999). Summary: The aim of this paper is to unify the concepts of topological ideals, operation functions (= expansions) and generalized closed sets. Cited in 5 ReviewsCited in 21 Documents MSC: 54H05 Descriptive set theory (topological aspects of Borel, analytic, projective, etc. sets) 54C08 Weak and generalized continuity 54D10 Lower separation axioms (\(T_0\)–\(T_3\), etc.) 54C10 Special maps on topological spaces (open, closed, perfect, etc.) PDFBibTeX XMLCite \textit{J. Dontchev} et al., Math. Japon. 49, No. 3, 395--401 (1999; Zbl 0991.54043)