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1983, Volume 19, Number 3  

Ordinary Differential Equations
Affine-invariant conditions for topological distinction of quadratic systems in the presence of a center
N. I. Vulpe 		371–379
Selfadjointness of a differential operator with periodic coefficients
V. A. Erovenko 		380–387
Asymptotic behavior of the fundamental matrix of solutions of a linear system of differential equations in the presence of turning points
A. F. Kadomtseva 		388–396
Some nonlinear boundary value problems
V. P. Maksimov 		396–414
A class of differential and functional equations
A. Z. Mokhon'ko 		414–419
Zones of capture and evasion in dynamic games of quality
G. V. Tomskii 		419–425

Partial Differential Equations
An aspect of the development of the theory of the anisotropic strict extremum principle of A. D. Aleksandrov
L. I. Kamynin, B. N. Khimchenko 		426–437
The behavior of solutions of second-order degenerate parabolic equations near a boundary point
I. T. Mamedov 		437–445
Investigation of a second-order elliptic operator in domains with an infinite boundary by means of the operator Sturm–Liouville equation. I
P. A. Mishnaevskii 		445–457
Nonlocal elliptic boundary value problems with degeneration
A. L. Skubachevskii 		457–470
Fundamental solutions for the potential of generalized Cauchy–Riemann systems of a certain class
A. P. Chernyaev 		470–482

Numerical methods
Localization of gas dynamic processes in the case of isentropic compression of a gas in a mode with peaking
M. A. Anufrieva, A. P. Mikhailov 		483–491
Some methods for solving the Stefan problem
O. I. Bakirova 		491–500
Numerical solution of some axially symmetric problems of the mathematical theory of elasticity by the finite difference method
R. D. Lazarov 		500–507
Generalized nonlinear interpolation and solution of boundary value problems
O. N. Litvin 		508–515

Short Communications
A class of operator equations
N. Yu. Bakaev 		516–518
The problem of optimization with change of phase space
V. G. Boltyanskii 		518–521
Stability of the zero solution of a quasilinear nonautonomous system in the critical case
I. E. Vitrichenko, A. V. Kostin 		521–523
The lattice method of solving boundary value problems of the theory of heat conduction
A. V. Glazov 		523–525
On the Kuznetsov–Malgrange theorem
P. N. Zyukin 		525–528
On the theory of stability in the first approximation of completely integrable Pfaffian systems
P. G. Lasy 		529–532
An extremum principle for a degenerate hyperbolic system
I. V. Maiorov 		532–535
Fundamental solution of a system of equations of statics of a cubically anisotropic medium
M. D. Martynenko, L. P. Knyazeva 		535–537
The Cauchy problem for a second-order equation
I. V. Mel'nikova 		537–538
The Lyapunov function with a derivative of a special type for a linear system
B. N. Skachkov 		539–540
Analytic equivalence of systems of differential equations in the neighborhood of an exponentially stable invariant torus
S. P. Tokarev 		540–543
Stability of multifrequency systems in the case of resonance without synchronization of phase variables
O. P. Filatov 		543–546
 
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