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MATHEMATICS
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Mappings of families of sets
A. D. Aleksandrov
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503 |
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On a method of inverting symmetric matrices
M. A. Aleksidze
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507 |
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Boundary value problems for elliptic and parabolic equations in unbounded domains
L. A. Bagirov
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511 |
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The local conjugacy of diffeomorphisms
G. R. Belitskii
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515 |
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The representaion of large numbers by ternary quadratic forms
E. P. Golubeva
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519 |
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Variational theorems for certain classes of analytic functions in doubly connected domains
V. Ya. Gutlyanskii
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522 |
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The existence of mappings on the plane for degenerate first order elliptic systems
I. S. Ovchinnikov
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526 |
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Construction of separatrix surfaces and stability regions in the phase spaces of nonlinear systems
B. N. Petrov, R. A. Nelepin, B. M. Shamrikov
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530 |
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On the problem of the classification of filters
S. Sirota
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533 |
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Theorems on minimizing paths in noncompact Riemannian spaces of positive curvature
V. A. Toponogov
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537 |
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Homogeneous generalized functions and the Radon transform in a space of rectangular matrices over a continuous locally compact disconnected field
V. G. Chernov
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540 |
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CYBERNETICS AND THE REGULATION THEORY
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On the number of errors which can be corrected by the Reed–Muller code
R. E. Krichevskii
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544 |
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The use of discontinuous sliding hyperplanes in systems with variable structure
I. M. Makarov, V. Z. Rakhmankulov
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548 |
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FLUID MECHANICS
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The problem of closure in the theory of turbulence
B. Ya. Lyubimov, F. R. Ulinich
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551 |
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ASTRONOMY
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Short-period pulsations of the CP 0808 pulsar and the main characteristics of its radiowave emission in metre-wave range
V. V. Vitkevich, Yu. P. Shitov
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553 |
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GEOPHYSICS
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Decay of spheroidal Earth's oscillations with small values of $n$
V. N. Zharkov, V. M. Lyubimov
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574 |
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Variation of the parameters of longitudinal and transverse elastic waves during the twisting of rock specimens
V. V. Rzhevskii, V. I. Rogozhnikov, V. S. Yamshchikov
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577 |
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CRYSTALLOGRAPHY
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On structural admixture of tungsten and gallium in synthetic quartz crystals
V. S. Balitskii, M. I. Samoilovich, L. I. Tsinober
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580 |
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Oriented crystallization on photoelectret selenium layers duplicating the electrical structure of the surface of crystals
G. I. Distler, V. G. Obronov
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584 |
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Поправки к статье “О безусловном экстремуме функционалов и о сходимости минимизирующих последовательностей”
(ДАН, т. 183, № 6, 1968 г.)
M. M. Vainberg
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Поправки к статье “О бирациональной эквивалентности линейных алгебраических групп” (ДАН, т. 188, № 5, 1969 г.)
V. E. Voskresenskii
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