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Found 22 Documents (Results 1–22)

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Kinematic approach to the group velocity of high-frequency space-time Love (SH) and Rayleigh (SV) waves. (English. Russian original) Zbl 0741.73015

J. Sov. Math. 57, No. 3, 3183-3186 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 182-186 (1989).
MSC:  74J15
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On bending vibrations of a periodically inhomomgeneous orthotropic plate. (English. Russian original) Zbl 0741.73028

J. Sov. Math. 57, No. 3, 3181-3182 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 179-181 (1989).
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Splitting of the spactrum of the Laplace operator on an ellipse with cuts. (English. Russian original) Zbl 0741.35045

J. Sov. Math. 57, No. 3, 3176-3180 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 173-178 (1989).
MSC:  35P05 35J05
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On a fast method for computing the field of waves reflected by a thin elastic layer. (English. Russian original) Zbl 0741.73045

J. Sov. Math. 57, No. 3, 3163-3169 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 152-162 (1989).
MSC:  74S30 74J20
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A method of estimation of the frequency selectivity of a cochlear model from the amplitude-versus-coordinate characteristic. (English. Russian original) Zbl 0742.92010

J. Sov. Math. 57, No. 3, 3154-3158 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 139-146 (1989).
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A cochlear model with transversally inhomogeneous cross-section. (English. Russian original) Zbl 0742.92009

J. Sov. Math. 57, No. 3, 3147-3153 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 128-138 (1989).
MSC:  92C30 74L15 92C10
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The influence of a crack in a medium on the interference waves. (English. Russian original) Zbl 0741.73035

J. Sov. Math. 57, No. 3, 3136-3139 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 110-115 (1989).
MSC:  74R99 74J20 74L05
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Justification of the asymptotic formulas obtained by the isomonodromic deformation method. (English. Russian original) Zbl 0745.34061

J. Sov. Math. 57, No. 3, 3131-3135 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 101-109 (1989).
MSC:  34E99
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A procedure for computing successive approximations in the asymptotic space-time (st) ray method of a Gaussian beams. II. (An isotropic inhomogeneous elastic medium). (English. Russian original) Zbl 0741.73044

J. Sov. Math. 57, No. 3, 3123-3130 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 88-100 (1989).
MSC:  74S30 74J99 74J10
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The method of transformation operators in the inverse scattering problem. The one-dimensional Stark effect. (English. Russian original) Zbl 0745.34076

J. Sov. Math. 57, No. 3, 3111-3122 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 73-87 (1989).
MSC:  34L25 34A55 78A25
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Whitham’s dynamical principle for parabolic equations and its proof. (English. Russian original) Zbl 0741.35025

J. Sov. Math. 57, No. 3, 3093-3096 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 46-51 (1989).
MSC:  35K55 35A15
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Diffraction of elastic waves by a free wedge. Reduction to a singular integral equation. (English. Russian original) Zbl 0741.73016

J. Sov. Math. 57, No. 3, 3087-3092 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 37-45 (1989).
MSC:  74J20 74F10 35C15
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Eigenfunctions in the Dirichlet and Neumann boundary value problems for the elliptic sinh-Gordon equation on a ractangle. (English. Russian original) Zbl 0741.35054

J. Sov. Math. 57, No. 3, 3084-3086 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 32-36 (1989).
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The methods of boundary control theory in the inverse spectral problem for an inhomogeneous string. (English. Russian original) Zbl 0741.73031

J. Sov. Math. 57, No. 3, 3072-3077 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 14-22 (1989).
MSC:  74M05 49N45 74S30 74E05 74K05 93B40
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Ray-mode representation of the Green function in a three-dimensional homogeneous waveguide. (English. Russian original) Zbl 0796.76080

J. Sov. Math. 57, No. 3, 3170-3175 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 163-172 (1989).
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On whispering gallery wave propagation in a medium with a vertical separating boundary. (English. Russian original) Zbl 0797.76086

J. Sov. Math. 57, No. 3, 3159-3162 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 147-151 (1989).
MSC:  76Q05
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Computation of the wave field in the problem of diffraction by a smooth periodic boundary. (English. Russian original) Zbl 0796.76017

J. Sov. Math. 57, No. 3, 3107-3110 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 67-72 (1989).
MSC:  76B15 78A45
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The energy conservation law in acoustics of a moving nonstationary inhomogeneous medium. (English. Russian original) Zbl 0795.76072

J. Sov. Math. 57, No. 3, 3097-3100 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 52-57 (1989).
MSC:  76Q05 35L65
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On asymptotic solutions of the problems of moving sources of diffusion and oscillations. (English. Russian original) Zbl 0795.76076

J. Sov. Math. 57, No. 3, 3067-3071 (1991); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 179, 6-13 (1989).
MSC:  76R50 35Q35
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