Ordinary Differential Equations


Certain solutions of systems of ordinary differential equations with polynomial right hand side. I, II L. A. Beklemisheva

1739 

The stability in the large of the zero solution of certain fifth order nonlinear differential equations L. I. Burganskaya

1752 

The structure of solutions of a certain system of two differential equations. I È. I. Grudo

1765 

The solvability of certain boundary value problems for a second order ordinary differential equation V. V. Gudkov, A. Ya. Lepin

1779 

On the optimization of control systems in the presence of constraints. I, II M. I. Gusev, A. B. Kurzhanskii

1789 

The solutions of the Briot and Bouquet equation with constant deviations of the argument in the case of simple roots of the characteristic equation N. P. Kovalevskiĭ

1801 

The singular separatrix cycles of a quadratic differential equation that has a straight line as a solution I. S. Kukles, I. G. Rozet

1813 

A certain matrix method in the theory of oscillations V. N. Laptinskii

1819 

The construction of the differential equations of optimal motion for a given variety R. G. Mukharlyamov

1825 

Partial Differential Equations


The splitting principle for nonselfadjoint partial differential operators I. I. Golichev

1835 

The generalized localization principle for spectral expansions connected with the Beltrami operator G. A. Il'yushina

1845 

Boundary value problems for Petrovskiǐ wellposed equations of positive genus in the plane F. G. Selezneva, S. D. Èidel'man

1854 

The coefficient stability of the solution of the Dirichlet problem for the equation $div\{k(x) grad u\}=f(x)$ P. K. Senatorov

1869 

Finite difference equations


Difference schemes for the solution of illposed abstract Cauchy problems A. B. Bakushinskii

1876 

Certain sufficient conditions for stability of the BubnovGalerkin method for a boundary value problem in Hilbert space M. A. Veliev

1886 

Short Communications


Stability of linear homogeneous differential equations with delayed argument M. I. Artem'ev

1895 

The reducibility of a system of two differential equations to normal form Yu. N. Bibikov

1899 

An application of the method of Ljapunov functions to the investigation of oscillations in nonlinear systems with lag R. E. Ginzburg

1903 

Asymptotic behavior of the solutions of invariant linear systems of differential equations M. V. Zaretskii

1906 

The first boundary value problem for a charged system of quasilinear parabolic equations A. D. Iskenderov

1911 

The extendability of the solutions of equations with delayed argument O. I. Kyun

1914 

The existence and uniqueness of the solution of a certain boundary value problem A. V. Finkelstein

1918 