# Differential Equations | 2003(39) articles

- The Pontryagin Maximum Principle and Sufficient Optimality Conditions for Nonlinear Problems
- On the Equivalence of Foliations of Linear Differential Systems
- Stability of a Homogeneous Nonstationary System with Linear Delay
- Continua of Cycles of Higher-Order Equations
- Stability-Like Properties of Stochastic Differential Equations
- Global Controllability of the Complete Set of Lyapunov Invariants of Periodic Systems
- A Theory of Dynamic Conflict Problems on Intersecting Sets
- Nonzero Periodic Solutions of Nonlinear Systems of Ordinary Differential Equations with a Singular Matrix Multiplying the Derivatives
- Controllability Conditions for the Riccati Equation
- Global Solutions of the Drift-Diffusion Approximation Equations in Gas Discharge Theory
- Existence and Uniqueness of Solutions of Some Nonlinear Parabolic Equations
- The Behavior of Solutions of Degenerate Elliptic Second-Order Equations with Lower-Order Terms in Unbounded Domains
- Fredholm Property of the Inverse Source Problem for Parabolic Systems
- On the Solvability of Hyperbolic Equations and Elliptic Inequalities on Stratified Sets
- Problem Δ2 for a Hyperbolic Equation with a Transmission Condition for Limits of Fractional Derivatives
- An Estimate of the First Eigenvalue in a Many-Point Boundary Value Problem
- A Stabilization Criterion for the Solution of the Cauchy Problem for the Heat Equation in the Bolyai—Lobachevskii Space