Аннотация:
Plenary lecture at the International Congress of Mathematicians (Berlin 1998,
August 18–27). Reprinted from Doc. Math. J., DMV, Extra Volume ICM I, 1998, pp. 381–402. c J.Moser, 1998.
Ключевые слова:KAM theory and applications, integrable Hamiltonian systems, historical review.