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Found 17 Documents (Results 1–17)

Continuity of operator functions in topologies connected to a trace on a von Neumann algebra. (English. Russian original) Zbl 0639.46057

Sov. Math. 31, No. 1, 110-114 (1987); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1987, No. 1(296), 77-79 (1987).
Reviewer: A.Bartoszewicz
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Jackson constants when approximating functions using linear operators. (English. Russian original) Zbl 0628.41023

Sov. Math. 31, No. 1, 9-18 (1987); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1987, No. 1(296), 8-15 (1987).
Reviewer: B.Bojanov
MSC:  41A36 41A35 41A25
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Algorithm of the estimate of upper and lower bounds of constants and its use in the theory of one-sheeted functions. (English. Russian original) Zbl 0626.30017

Sov. Math. 31, No. 1, 93-97 (1987); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1987, No. 1(296), 68-70 (1987).
Reviewer: M.Lehtinen
MSC:  30C55 65E05
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Conditions for the existence of a spinor connection on a fibre bundle for a general space-time. (English. Russian original) Zbl 0616.53021

Sov. Math. 31, No. 1, 101-105 (1987); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1987, No. 1(296), 72-74 (1987).
Reviewer: J.D.Zund
MSC:  53C05 53C80 83D05
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