Contents

Regular and Chaotic Dynamics

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Vol. 30, No. 6, 2025

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The Lagrange Identity and Dynamics in a Potential Jacobi Field

Valery V. Kozlov p. 887  abstract

On the Problem of Stability of Viscous Shocks

Sergey V. Bolotin and Dmitry V. Treschev p. 908  abstract

Dynamics of an Elliptic Foil with an Attached Vortex in an Ideal Fluid: The Integrable Case

Alexander A. Kilin, Anna M. Gavrilova, and Elizaveta M. Artemova p. 931  abstract

The Birkhoff Normal Form through the Lens of Representation Theory

Richard Montgomery p. 952  abstract

On Perturbations of the Spectrum of a One-Dimensional \(\mathcal{PT}\)-Symmetric Periodic Schrödinger Operator

Petr G. Grinevich and Iskander A. Taimanov p. 962  abstract

Computation of Periodic Libration Point Orbits in the Circular Restricted Three-Body Problem

Daniella Gafurova and Sergey Aksenov p. 969  abstract

New Dynamical Mechanisms of Quenching in a System of Coupled Bautin Oscillators

Andrey A. Markelov, Aleksey S. Dmitrichev, and Vladimir I. Nekorkin p. 992  abstract

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