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1961, Volume 139, Number 1  


MATHEMATICS
Qualitative integration of a system of $n$ differential equations in a region containing a singular point and a limit cycle
N. N. Brushlinskaya
9
Additive functionals on a multi-dimensional Wiener process
A. D. Venttsel'
13
Solutions of partial differential equations with constant coefficients
V. V. Grushin
17
A limit theorem
V. Yu. Krylov
20
On $V^n$ continua
V. Kuz'minov
24
Approximation of functions by generalized linear Landau operators
R. G. Mamedov
28
Determination of the capture region for a system close to Hamiltonian
V. Mel'nikov
31
Some problems in the theory of homogeneous Markov processes with discrete time
S. V. Nagaev
34
Elliptic operators on two-dimensional manifolds
M. Z. Solomyak
37
Necessary and sufficient conditions for the stability of a system of difference equations
V. Ya. Urm
40
A method for determining the constants in the Christoffel–Schwarz integral
P. F. Fil'chakov
44
The real and imaginary parts of an unbounded operator
È. R. Tsekanovskii
48
Extensions of the indexial of a finite group
S. A. Chunikhin
52
The structure of the functional space of complex canonical equations with periodic coefficients
V. A. Yakubovich
54

FLUID MECHANICS
Vortex and circulation conservation in magnetohydrodynamics
M. N. Kogan
58
Resistance of polymeric plastics to erosion by cavitation
K. K. Shal'nev
60

THEORY OF ELASTICITY
Some nonlinear boundary value problems in the theory of a Maxwellian body
B. M. Naimark
63

MATHEMATICAL PHYSICS
The propagation of long and ultra-long radio waves about the earth in the lower ($C$, $D$, and $E$) layers of the ionosphere in the light of information theory
P. E. Krasnushkin
67

PHYSICS
On the problem of the state of a gas moving near a solid surface
S. P. Bakanov, B. V. Deryagin
71
The coefficient of quadrupole absorption and the optical life time of the ground state of excitons in a $\mathrm{Cu}_2\mathrm{O}$ crystal
E. F. Gross, A. A. Kaplyanskii
75
The matrix element of the reaction $\pi+\mathrm{N}\to\pi+\pi+\mathrm{N}$ at low energies
O. I. Zavialov, V. P. Pavlov
79

GEOPHYSICS
Fay's gravitational anomalies and the isostasy
B. A. Andreev
91

CHEMISTRY
Thermal condensation of dichlorosilane with chlorobenzene
K. A. Andrianov, V. I. Savushkina, S. A. Golubtsov, B. A. Charskaya
95
The oxidation of $n$-butane in the gaseous and liquid phases
È. A. Blyumberg, G. E. Zaikov, N. M. Emanuel'
99
Intermolecular interaction between tetrahydrofuran and hydrogen chloride
Yu. G. Borod'ko, Ya. K. Syrkin
102
Condensation of formaldehyde with perfluorolefines – tetrafluorethylene, hexafluoropropylene and trifluorochlorethylene
B. L. Dyatkin, E. P. Mochalina, I. L. Knuniants
106
“Thermal” regrouping of hydrazo compounds
L. G. Krolik, V. O. Lukashevich
110
The tri-$n$-aminotriphenyloxonium cation as a structural analogue of parafuchsin
A. N. Nesmeyanov, T. P. Tolstaya, A. V. Gribanov
114
An investigation of the lead selenite – lead oxide system
B. A. Popovkin, A. V. Novoselova
117
The use of spectrophotometry in the study of the composition- and structure of chloride complexes of cobalt
I. V. Tananaev, B. F. Dzhurinsky
120
An investigation into the alkylation of aromatic hydrocarbons
A. V. Topchiev, M. V. Kurashev, I. F. Gavrilenko
124
Imination of 2-substituted indandiones-1,3
Ya. F. Freimanis, G. Ya Vanag
128
Alkylation of tetrahydrofuran by ethylene
N. I. Shuykin, B. L. Lebedev
131

PHYSICAL CHEMISTRY
The life time of unbasic current carriers as influenced by the oxygen adsorbed on germanium surface
R. Kh. Burshtein, S. I. Sergeev
134
Detonation of nitromethane-metone mixtures
A. N. Dremin, O. K. Rozanov
137
Determination of relative adsorption coefficients by isotopic dilution
G. V. Isagulyants, A. A. Balandin, E. I. Popov
139
The photocatalytic action of $\mathrm{ZnO}$ and $\mathrm{TiO}_2$ in the reactions involving the liberation of oxygen
A. A. Krasnovskii, G. P. Brin
142
Paper chromatography, of diaryl organotin compounds and its use in studying the products of reaction between unsymmetric diaryliodonium salts and tin dichloride
O. A. Reutov, O. A. Ptitsyna, M. F. Turchinskii
146
Heats of wetting aluminium oxide by $n$-heptane solutions of benzene, cyclohexane and cyclohexene
I. V. Smirnova, A. A. Kubasov, K. V. Topchieva
150
The effect of acidity on the yield of chemical radiation reactions
V. N. Shubin, P. I. Dolin
154

Поправки к статье “Энтропия локализации и протяженность в квантовомеханической системе” (ДАН, т. 135, № 5, 1960 г.)
D. A. Bochvar, I. V. Stankevich, A. L. Chistyakov
 
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