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On exact sequences in homotopy theory. (English) Zbl 0276.18011
Proc. internat. Sympos. Topology Appl., Budva 1972, 136-141 (1973).

18D35 Structured objects in a category (MSC2010)
18F99 Categories in geometry and topology
55P99 Homotopy theory
55M30 Lyusternik-Shnirel’man category of a space, topological complexity √† la Farber, topological robotics (topological aspects)