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On a characteristic property of isometric mappings. (English. Russian original) Zbl 0336.54029

Sov. Math., Dokl. 17, 43-45 (1976); translation from Dokl. Akad. Nauk SSSR 226, 48-50 (1976).

MSC:

54E40 Special maps on metric spaces
51N10 Affine analytic geometry
51M10 Hyperbolic and elliptic geometries (general) and generalizations