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JOURNALS // Doklady Akademii Nauk // Archive

1985, Volume 284, Number 5


MATHEMATICS
Uniqueness of the determination of the coefficient of the transport equation with a special type of source
D. S. Anikonov
1033
Indices of instability of differential operators
V. S. Belonosov
1037
A unitary subgroup and a congruence-subgroup of a multiplicative group of an integral group ring
A. A. Bovdi
1041
Asymptotic normality of mixing random fields
A. V. Bulinski
1044
Topological problems on lines and points of three-dimensional space
O. Ya. Viro
1049
Exponents of zero-dimensional Polish spaces
A. N. Vibornov
1053
Groups of order automorphisms of affine space and their discontinuous extensions
A. K. Guts
1057
Asymptotic expansion of solutions of the Dirichlet problem for elliptic equations and systems for the theory of elasticity in a perforated domain
G. A. Iosif'yan, O. A. Oleinik, A. S. Shamaev
1062
The Cauchy problem in the whole space and an inverse problem for equations of mean spatial illuminance propagation
V. R. Kireitov
1066
Boundary values of solutions of second-order elliptic equations that are degenerate on the boundary of the domain
I. M. Petrushko
1069
Decomposition of a function, analytic in a polygon, into the sum of periodic functions
A. M. Sedletskii
1073
Convergence to a limit state for groups of canonical linear transformations of $C^\ast$-algebras of canonical anticommutation relations
Yu. M. Sukhov, A. G. Shukhov
1076
The Cauchy problem for systems of partial differential equations with a distinguished variable
Chin' Ngok Min', Tran Duc Van
1080

FLUID MECHANICS
Influence of stratification on the stability of shear flows of an ideal fluid
Yu. N. Makov, Yu. A. Stepanyants
1084

GEOPHYSICS
On some applications of the wave interaction theory
V. P. Kuznetsov
1089

MATHEMATICAL PHYSICS
Quasiclassical approximation in the method of the inverse scattering problem
V. V. Geogdzhaev
1093
A method for the numerical investigation of the effect of convection on light beam propagation
B. P. Gerasimov, T. G. Elizarova
1098
Inverse problems for the radiation transport equation with cylindrical symmetry
V. I. Gryn'
1101

PHYSICS
On the behavior of the current-currying, stabilized superconductor in the varying magnetic fields
V. A. Al'tov, E. V. Blagov, V. V. Sychev, N. A. Kulysov
1104
Rechanneling effect for negatively charged high-energy particles
V. A. Muralev
1107
Temperature dependence of the lattice parameters and thermal expansion coefficients of the indium phosphide and arsenide solid solutions in the $7$$310$ K temperature range
N. N. Sirota, A. A. Sidorov
1111

CRYSTALLOGRAPHY
The crystal and molecular structure of $\alpha$-ethoxyacrolein semicarbazone
B. Ya. Antosyak, V. N. Biyushkin, N. A. Keiko, T. N. Mamashvili, M. G. Voronkov
1132
Crystal structure of a new mineral $\mathrm{Na}_8\mathrm{Ti}_{3{,}5}\mathrm{O}_2(\mathrm{OH})_2[\mathrm{SiO}_4]_4$ – polymorphous modification of natisite
E. V. Sokolova, N. A. Yamnova, Yu. K. Egorov-Tismenko, A. P. Khomyakov
1136
Structure of $1$-difluoronitroacetyl-$2{,}2$-dimethylhydrazine: a zwitterionic form
A. N. Chekhlov, V. K. Brel, I. V. Martynov
1142


© Steklov Math. Inst. of RAS, 2025