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Found 29 Documents (Results 1–29)

An inequality of Hilbert type with respect to a system of eigenfunctions of the Laplace operator for a radial function different from zero in a ball of sufficiently small radius. (English. Russian original) Zbl 0649.35071

Sov. Math., Dokl. 34, 599-602 (1987); translation from Dokl. Akad. Nauk SSSR 291, 1292-1296 (1986).
MSC:  35P10 35J05 42B05
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A theorem on decomposition of an operator, and some related questions in the analytic theory of perturbations. (English. Russian original) Zbl 0636.47019

Math. USSR, Izv. 28, 421-444 (1987); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 50, No. 3, 435-457 (1986).
Reviewer: S.Aliou-Lô
MSC:  47A55 47A70
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Spectral analysis of a nonselfadjoint differential operator arising in the one-dimensional problem of scattering by a Brownian particle. (English. Russian original) Zbl 0618.35085

Math. USSR, Sb. 57, 371-390 (1987); translation from Mat. Sb., Nov. Ser. 129(171), No. 3, 358-377 (1986).
Reviewer: A.Venkov
MSC:  35P10 35P25
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