Vol. 59, No. 6, 2023

Differential Equations

On Determining the Coefficients of a Quadratic Lyapunov Function with Given Properties in the Case of Multiple Roots of the Characteristic Equation

O. G. Antonovskaya p. 721 abstract

Oscillating Solutions of a Second-Order Ordinary Differential Equation with a Three-Position Hysteresis Relay without Entering the Saturation Zones

V. V. Yevstafyeva p. 726 abstract

Studying the Oscillation, Rotation, and Wandering Indicators by the First Approximation

I. N. Sergeev p. 741 abstract

Elliptic Problems and Integral Equations in Spaces of Different Smoothness in Different Variables

A. V. Vasil’ev, and V. B. Vasil’ev p. 751 abstract

Approximation of the Solution of an Inverse Problem for a Singularly Perturbed System of Partial Differential Equations

A. M. Denisov p. 762 abstract

Minimum Principle for the Tikhonov Functional in the Problem of Stable Continuation of a Potential Field from a Surface

E. B. Laneev, and N. Yu. Chernikova p. 769 abstract

Two-Dimensional Fluid Filtration Problems with Boundary Sources in an Anisotropic Inhomogeneous Layer

V. F. Piven’ p. 781 abstract

On A.P. Favorskii’s Quasiacoustic Scheme

M. V. Abakumov, and V. A. Isakov p. 799 abstract

Nonideal Thermal Contact Problem

M. P. Galanin, and A. S. Rodin p. 810 abstract

Explicit–Implicit Schemes for Calculating the Dynamics of Elastoviscoplastic Media with a Short Relaxation Time

V. I. Golubev, I. S. Nikitin, N. G. Burago, and Yu. A. Golubeva p. 822 abstract

Sliding Window Algorithm for Parametric Identification of Dynamical Systems with Rectangular and Ellipsoid Parameter Uncertainty Domains

A. Yu. Morozov, and D. L. Reviznikov p. 833 abstract

On Approximation of Surface Derivatives of Functions with the Application of Integral Operators

A. V. Setukha p. 847 abstract

Nonanalytic First Integrals of Analytic Systems of Differential Equations in a Neighborhood of Stable Equilibria

V. V. Kozlov p. 862 abstract