Vol. 62, No. 1, 2026

Differential Equations

Local Bifurcations in Continuous-Discrete-Time Two-Parameter Dynamical Systems

S. V. Akmanova and M. G. Yumagulov p. 1 abstract

Some Mathematical Issues of Analysis of Plasma Output Parameters in Stationary Plasma Thrusters

M. B. Gavrikov and A. A. Taiurskii p. 12 abstract

On the Main Properties of Solution Sets of Ordinary Differential Equations

E. Yu. Mychka p. 33 abstract

On the Fredholm Solvability of a Nonlocal Problem of Even Order with Integral Conditions Containing Derivatives of the Unknown Function

R. A. Bayrash p. 48 abstract

Riesz Basicity for the Sturm–Liouville Operator with a Distributional Potential on a Three-Edge Graph

I. V. Sadovnichaya and K. P. Zuev p. 69 abstract

On the Regularity of Generalized Eigenfunctions of Differential–Difference Operators

R. Yu. Vorotnikov and A. L. Skubachevskii p. 90 abstract

Group Analysis and Exact Solutions of a Geophysical Hydrodynamics Equation with Monge–Ampère Type Nonlinearity

A. V. Aksenov and A. D. Polyanin p. 112 abstract

Boundary Value Problem for a Stationary Magnetohydrodynamic Model Generalizing the Boussinesq Approximation

R. V. Brizitskii p. 126 abstract

On the Solvability of Incomplete Problems for an Abstract Singular Equation

A. V. Glushak p. 138 abstract

The Neumann Problem in a Domain with Transverse Perforation

S. A. Nazarov p. 159 abstract

Asymptotic Analysis of a Class of Higher-Order Quasilinear Singular Perturbation Boundary Value Problems with the Same Type of Singularity

Hao Zhang and Mingkang Ni p. 179 abstract

Construction of the Transfer Function of the Poincaré–Steklov Operator for an Elastic Layer

A. A. Bobylev p. 199 abstract

Analysis of the Vallée-Poussin Boundary Value Problem for a Generalized Nonlinear Second-Order Matrix Lyapunov Equation

A. I. Kashpar p. 216 abstract