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MATHEMATICS
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On the problem of reducibility of linear systems
K. A. Abgaryan
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265 |
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Abstract separation of variables
Dzh. È. Allakhverdiev, R. M. Dzhabarzade
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269 |
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On the Noethericity and index of a class of two-dimensional
singular integral equations with discontinuous coefficients
G. Dzhangibekov
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272 |
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Riesz derivatives with nonstandard truncation and their
application to the inversion and description of potentials that commute
with dilations
G. P. Emgusheva, V. A. Nogin
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277 |
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A connection between the well-posedness of the Cauchy problem for
an equation and for a system in a Banach space
I. V. Mel'nikova, A. I. Filinkov
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280 |
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Lie superalgebras of vector fields on splittable flag
supermanifolds
A. L. Onishchik, A. A. Serov
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284 |
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$N^{-1}$-property of mappings and Luzin's condition $(N)$
S. P. Ponomarev
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288 |
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Representation of a manifold of solutions, and boundary value problems for a class of second-order linear hyperbolic systems with an interior singular line
N. Radjabov
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291 |
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Metric properties of chordal and Ptolemaic graphs
S. V. Yushmanov
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296 |
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MECHANICS
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The decomposition principle in the control of mechanical systems
E. S. Pyatnitskii
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300 |
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FLUID MECHANICS
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Autowave processes in a conducting gas flowing through a porous medium in an electric field
N. A. Kudryashov
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304 |
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THEORY OF ELASTICITY
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Equations on the stability of three-dimensional bodies made of
composites of regular structure
V. Z. Parton, A. L. Kalamkarov
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308 |
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ASTRONOMY
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Analysis of errors of the large telescope optics
È. A. Vitrichenko, V. Y. Zuev, V. P. Lukin, L. A. Pushnoi
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312 |
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A distance determination method for planetary nebulae with the help of pseudoresonance lines
G. A. Gurzadyan, A. G. Egikyan
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316 |
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GEOPHYSICS
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On the free evolution of spectra of two-dimensional turbulence in a single-layer ocean with a free surface on the $\beta$-plane
R. S. Iroshnikov
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321 |
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On some peculiarities of the earthquake registration by an inertialess seismometer
J. Levin, V. T. Levshenko, A. M. Sadovskii
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326 |
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On the mechanics of lithosphere blocks
A. S. Monin
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329 |
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On the seasonal variations of a subsoil radon
V. P. Rudakov, A. V. Petrov, M. M. Basentsyan
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332 |
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New data on the earth crust electroconductivity (Middle Urals)
A. A. Savel'ev, A. G. Dyakonova, V. S. Vishnev
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334 |
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MATHEMATICAL PHYSICS
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An analogue of Kotel'nikov's theorem for nonuniform readings. Extrapolation and interpolation of the amplitude of the Fourier spectrum of finite signals
L. A. Aizenberg
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338 |
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Bäcklund transformations for a fourth-order partial differential equation with a Burgers–KdV nonlinearity
N. A. Kudryashov
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342 |
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Gibbs representations of the Lie algebra of currents, and the complete system of N. N. Bogolyubov quantum functional equations in equilibrium statistical mechanics
A. K. Prikarpatskii, P. I. Kalenyuk
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346 |
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CRYSTALLOGRAPHY
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Crystal and molecular structure of
$\mathrm{N}$-meta-fluorobenzoyl-$\mathrm{N}',\mathrm{N}',\mathrm{N}",\mathrm{N}"$-diethylenetriamide of phosphoric acid
O. N. Rebrova, V. N. Biyushkin, T. I. Malinovskii, L. D. Protsenko, T. N. Dneprova
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361 |
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