On \(m\)-separated projection spaces
Projection spaces were introduced by \textit{H. Ehrig}, \textit{F. Parisi-Presicce}, \textit{P. Boehm}, \textit{C. Rieckhoff}, \textit{C. Dimitrovici} and \textit{M. Große-Rhode} [Lect. Notes Comput. Sci. 332, 23-43 (1988; Zbl 0661.68017)]. The author studies closure operators of the category of projection spaces (here closure operators are intended as introduced by the author and the reviewer [Topology Appl. 27, 129-143 (1987; Zbl 0634.54008)], see also the recent monograph of \textit{W. Tholen} and the reviewer [Categorical structure of closure operators with applications to topology, algebra and discrete mathematics, Math. Appl. 346 (1995)]). Properties of projection spaces defined by means of closure operators are studied further: compact spaces, injective spaces, complete spaces, absolutely closed spaces.
scientific article; zbMATH DE number 617354