
The simultaneous stability of the characteristic exponents of mutually adjoint systems of linear differential equations B. F. Bylov

943 

The asymptotic representation of the solutions of nonlinear second order differential equations T. A. Chanturiya

948 

Similarity of the solutions of a perturbed and an unperturbed system with a divideddiagonal matrix È. A. Tikhonova

962 

Asymptotic integration of certain classes of nonautonomous systems of differential equations by means of differential invariants I. A. Pavlyuk

975 

Integrals of a linear equation of order $m+n$ with a small parameter multiplying the derivatives P. E. Tovstik

989 

Construction in finite form of the solutions of certain classes of nonautonomous systems of ordinary differential equations L. D. Vishnevskii

1000 

Synthesis of optimal control for a second order nonlinear system of special form A. G. Pashkov

1007 

A certain class of systems of two differential equations L. S. Lavrinovich

1017 

Certain iteration processes for the solution of differential equations in a Banach space O. Ashirov

1026 

On the question of constructing coordinate sequences V. L. Rvachev

1034 

A theory of the functional equations of Maljužinec. II. The theory of infinite Barnes products. General solutions of homogeneous functional equations of Maljužinec. Various representations of the fundamental solutions A. A. Tuzhilin

1048 

The behavior of the solution of a boundary value problem for a second order quasilinear parabolic equation as $t\rightarrow \infty $ Yu. P. Gor'kov

1064 

The behavior on the boundary of the solutions of a degenerate second order elliptic equation with discontinuous coefficients A. T. Abbasov

1073 

The equivalence of the $T_s(\alpha,\lambda_k)$ methods, $s>0$, the Cesàro and Riesz methods of arbitrary positive order, and Abel's method, for Fourier series in fundamental function systems of Laplace's operator G. I. Furletov

1086 

A certain modification of Fourier's method for a certain class of polyharmonic equations of parabolic type with coefficients that are dependent on the time T. L. Anikst

1099 

Short Communications


The asymptotic behavior of the solutions of a renewal equation Z. B. Tsalyuk

1112 

A remark on the asymptotic behavior of the solutions of the equation $u"+a(t)u=0$ I. T. Kiguradze, T. A. Chanturiya

1115 

Partial averaging in systems of ordinary differential equations A. N. Filatov

1118 

A certain approximate method of solving an abstract parabolic equation S. Ashirov

1121 

Three variants of averaging in integrodifferential equations G. S. Larionov

1125 

A test for the existence of a periodic solution of the Liénard equation E. D. Zhitelzeif

1127 

The asymptotic behavior of the solutions of nonlinear systems of differential equations G. A. Leonov

1131 