"This book presents some modern techniques in the theory of integrable systems viewed as variations on the theme of action-angle coordinates. These techniques i
This book is devoted to the relation between two different concepts of integrability: the complete integrability of complex analytical Hamiltonian systems and t
Among all the Hamiltonian systems, the integrable ones have special geometric properties; in particular, their solutions are very regular and quasi-periodic. Th
Some of the most active practitioners in the field of integrable systems have been asked to describe what they think of as the problems and results which seem t
This invaluable book examines qualitative and quantitative methods for nonlinear differential equations, as well as integrability and nonintegrability theory. S