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Found 104 Documents (Results 1–100)

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Mixed boundary value problems in singularly perturbed two-dimensional domains with the Steklov spectral condition. (English. Russian original) Zbl 1453.35012

J. Math. Sci., New York 251, No. 5, 655-695 (2020); translation from Probl. Mat. Anal. 106, 91-124 (2020).
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Computation of eigenfrequencies of an acoustic medium in a prolate spheroid by a modified Abramov method. (English. Russian original) Zbl 1455.35060

Comput. Math. Math. Phys. 60, No. 10, 1642-1655 (2020); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 10, 1697-1710 (2020).
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Distribution of prime numbers and the discrete spectrum of the Laplace operator. (English. Russian original) Zbl 1453.58008

Izv. Math. 84, No. 5, 960-977 (2020); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 5, 151-168 (2020).
MSC:  58J50 11M36
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Spectral geometry of shapes. Principles and applications. (English) Zbl 1442.58001

Computer Vision and Pattern Recognition Series. Amsterdam: Elsevier/Academic Press (ISBN 978-0-12-813842-7/pbk; 978-0-12-813843-4/ebook). xiii, 138 p. (2020).
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Estimates for numbers of negative eigenvalues of Laplacian for Y-type chain of weakly coupled ball resonators. (English) Zbl 1339.81034

Exner, Pavel (ed.) et al., Proceedings of the QMath12 conference on mathematical results in quantum mechanics, Berlin, Germany, September 10–13, 2013. With DVD-ROM. Hackensack, NJ: World Scientific (ISBN 978-981-4618-13-7/hbk; 978-981-4618-15-1/ebook). 325-330 (2015).
MSC:  81Q05 35J05 47B25
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Enforced stability of an eigenvalue in the continuous spectrum of a waveguide with an obstacle. (Russian, English) Zbl 1249.78029

Zh. Vychisl. Mat. Mat. Fiz. 52, No. 3, 521-538 (2012); translation in Comput. Math. Math. Phys. 52, No. 3, 448-464 (2012).
MSC:  78A50 35P15 35J05
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Second kind integral equations on the real line: solvability and numerical analysis in weighted spaces. (English) Zbl 1213.65152

Hannover: Univ. Hannover, Fachbereich Mathematik (Diss.). 111 p. (2004).
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The spectrum of the Laplacian on the pentagasket. (English) Zbl 1037.31010

Grabner, Peter (ed.) et al., Fractals in Graz 2001. Analysis, dynamics, geometry, stochastics. Proceedings of the conference, Graz, Austria, June 2001. Basel: Birkhäuser (ISBN 3-7643-7006-8/hbk). Trends in Mathematics, 1-24 (2003).
MSC:  31C20 28A80
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The analytical (spectral) representation of the solution of delay algebraic-differential equations. (English. Russian original) Zbl 1054.34107

J. Math. Sci., New York 114, No. 6, 1836-1843 (2003); translation from Zap. Nauchn. Semin. POMI 268, 145-158 (2000).
MSC:  34K06 34L16 34A09
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On the asymptotics of the counting function for irregular drums. (English) Zbl 0994.35101

Chen, Hua (ed.) et al., Partial differential equations and their applications. Proceedings of the conference, Wuhan, China, April 5-9, 1999. Singapore: World Scientific. 15-31 (1999).
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On equivariant extensions of a differential operator by the example of the Laplace operator in a circle. (English. Russian original) Zbl 0936.35049

Ukr. Math. J. 51, No. 2, 172-184 (1999); translation from Ukr. Mat. Zh. 51, No. 2, 158-169 (1999).
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Spectral theory of differential operators. Self-adjoint differential operators. Transl. from the Russian. (English) Zbl 0874.35002

New York, NY: Consultants Bureau. xvii, 390 p. (1995).
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Eigenfrequencies and eigenfunctions of the Laplacian for Neumann boundary conditions in a system of two coupled cavities. (English. Russian original) Zbl 0853.35084

Theor. Math. Phys. 100, No. 3, 1065-1074 (1994); translation from Teor. Mat. Fiz. 100, No. 3, 354-366 (1994).
MSC:  35P20 35J05 47A10
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On the spectral theory of an elliptic boundary value problem involving an indefinite weight. II. (English) Zbl 0828.35084

Helmke, Uwe (ed.) et al., Systems and networks: mathematical theory and applications. Proceedings of the 10th international symposium on the mathematical theory of networks and systems, MTNS ’93, held in Regensburg, Germany, August 2-6, 1993. Volume II: Invited and contributed papers. Berlin: Akademie Verlag. Math. Res. 79, 669-672 (1994).
Reviewer: G.Bottaro (Genova)
MSC:  35P05 35J05 47F05
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Geometry of reflecting rays and inverse spectral problems. (English) Zbl 0761.35077

Pure and Applied Mathematics. A Wiley-Interscience Series of Texts, Monographs and Tracts. Chichester etc.: John Wiley & Sons Ltd. (ISBN 0-471-93174-8). vi, 313 p. (1992).
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A problem of M. Kac concerning recovery of the shape of a domain from the spectrum of a Dirichlet problem. (English. Russian original) Zbl 0724.35107

J. Sov. Math. 55, No. 3, 1663-1672 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 173, 30-41 (1988).
MSC:  35R30 35J05
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Point interactions with an internal structure as limits of nonlocal separable potentials. (English) Zbl 0725.47001

Order, disorder and chaos in quantum systems, Proc. Conf., Dubna/USSR 1989, Oper. Theory, Adv. Appl. 46, 179-182 (1990).
MSC:  47A10 47A20 47N50
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Scattering operator, Eisenstein series, inner product formula and “Maass-Selberg” relations for Kleinian groups. (English) Zbl 0673.10023

Mem. Am. Math. Soc. 400, 87 p. (1989).
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On estimating the rate of convergence of difference schemes in eigenvalue problems for convex domains. (English. Russian original) Zbl 0502.65066

Sov. Math., Dokl. 22, 483-486 (1980); translation from Dokl. Akad. Nauk SSSR 254, 1035-1038 (1980).
MSC:  65N25 65N15 35P15
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