Ergodic Problems Of Classical Mechanics by Vladimir I. Arnold

A concise exploration of ergodic phenomena in Hamiltonian dynamics, presenting a curated set of problems and insights on integrability, chaos, and the statistical behavior of classical mechanical systems. It examines geodesic flows, billiard dynamics, and measure-preserving transformations; contrasts KAM stability with mixing and Anosov behavior; and discusses entropy, diffusion, and recurrence on energy surfaces. Emphasizing rigorous questions, examples, and conjectures, it highlights how the topology and geometry of phase space shape long-term dynamics and the foundations of statistical mechanics.