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Found 107 Documents (Results 1–100)

Eigenfunction expansions of elliptic operators with the eigenvalue parameter in boundary conditions. (Russian) Zbl 0754.35096

Linear operators and their applications, Themat. Collect. Sci. Works, Baku, 71-75 (1989).
MSC:  35P10 35J25 47F05
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On completeness of the system of eigenfunctions of the two-parameter spectral problem with operators of the Dirichlet problem in the principal part. (Russian) Zbl 0754.35095

Linear operators and their applications, Themat. Collect. Sci. Works, Baku, 50-54 (1989).
MSC:  35P10 47F05
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On an approximate method for solution of the problem on eigenvalues of the wave operator in axially symmetric domains of complicated form. (Russian) Zbl 0801.47034

Sidorov, A. F. (ed.), Numerical and analytical methods of modelling in continuum mechanics. Collection of scientific works. Sverdlovsk: Ural’skoe Otdelenie AN SSSR, 26-30 (1989).
MSC:  47F05 65M60 35J05
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On completeness of the system of root subspaces of a higher order non- selfadjoint operator of the Schrödinger type. (Russian) Zbl 0792.47019

Gol’tser, Ya. M. (ed.), Studies on differential equations and their applications. Alma-Ata: Kazakhskij Pedagogicheskij Institut Im. Abaya, 22-26 (1989).
MSC:  47A70 47B25 47F05
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Über den Kričever-Funktor in der Theorie der algebraischen Kurven. (On the Krichever functor in the theory of algebraic curves). (German) Zbl 0719.14019

Berlin: Humboldt-Univ., Math.-Naturwiss. Fak., Diss. 98 S. (1989).
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Der Neumannoperator auf streng pseudokonkaven Gebieten und andere Anwendungen der Integralformelmethode. (The Neumann operator on strongly pseudoconcave domains and other applications of the integral formula method). (German) Zbl 0734.47026

Bonn: Univ. Bonn. Habil.-Schr. 146 S. (1989).
MSC:  47F05
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Der Hermite’sche Differentialoperator auf dem \(R_ 2\) und angepaßte Funktionenräume vom Typ \(W^ s_{p,H}\) und \(B^ s_{p,q,H}\). (Hermite’s differential operator on \(R_ 2\) and adapted function spaces of type \(W^ s_{p,H}\) and \(B^ s_{p,q,H})\). (German) Zbl 0697.47060

Jena: Univ., Diss. A. 97 S. (1989).
MSC:  47F05 46E35 47E05
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Some properties of generalized spectral problems associated with the Schrödinger equation. (English. Russian original) Zbl 0711.47017

Theor. Math. Phys. 81, No. 1, 1053-1060 (1989); translation from Teor. Mat. Fiz. 81, No. 1, 59-68 (1989).
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Expanding properties of differential operators of infinite order in H(\({\mathcal D}\)). (English. Russian original) Zbl 0686.46013

Sel. Math. Sov. 8, No. 3, 189-195 (1989); translation from Multidimensional complex analysis, Work. Collect., Krasnoyarsk 1985, 27-35 (1985).
MSC:  46E10 47F05 32A10
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On the theory of the one-point boundary value problem for the Laplace operator. II. (English. Russian original) Zbl 0669.47028

Transl., Ser. 2, Am. Math. Soc. 144, 97-105 (1989); translation from Teor. Funkts., Funkts. Anal. Prilozh. 39, 87-94 (1983).
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On the theory of the one-point boundary value problem for the Laplace operator. I. (English. Russian original) Zbl 0669.47027

Transl., Ser. 2, Am. Math. Soc. 144, 87-95 (1989); translation from Teor. Funkts., Funkts. Anal. Prilozh. 38, 84-91 (1982).
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Lacunas of hyperbolic partial differential operators and singularity theory. (English. Russian original) Zbl 0783.47065

Transl., Ser. 2, Am. Math. Soc. 153, 25-37 (1992); translation from Operator theory in function spaces, Rev. Lect. 13th All-Union Sch., Kujbyshev/USSR 1988, 30-43 (1989).
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