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515.1 --- 512.58 --- 515.142.2 --- Topology --- Categories. Category theory --- General topological categories. Categories whose objects are topological spaces subject to various general restrictions, and whose morphisms are either continuous mappings or homotopy classes of such mappings. Other closely related categories --- 515.142.2 General topological categories. Categories whose objects are topological spaces subject to various general restrictions, and whose morphisms are either continuous mappings or homotopy classes of such mappings. Other closely related categories --- 512.58 Categories. Category theory --- 515.1 Topology --- Categories (Mathematics) --- Congresses. --- Topologie --- Catégories (mathématiques) --- Catégories (mathématiques)