
doi: 10.1007/bf00878505
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.
complete separated spaces, Semantics in the theory of computing, category of projection spaces, compact spaces, Categories of topological spaces and continuous mappings, Categorical methods in general topology, Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.), closure operators
complete separated spaces, Semantics in the theory of computing, category of projection spaces, compact spaces, Categories of topological spaces and continuous mappings, Categorical methods in general topology, Adjoint functors (universal constructions, reflective subcategories, Kan extensions, etc.), closure operators
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