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Angles and unit vectors of inclination for real 2-areas in Hermitian spaces over a tensor product of fields. (English) Zbl 0562.53007

Translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1984, No.7(266), 70-73 (Russian) (1984; Zbl 0548.53008).

MSC:

53A35 Non-Euclidean differential geometry
51M10 Hyperbolic and elliptic geometries (general) and generalizations