What is Quasi-Conservative Dynamics? On the Anniversary of A. D. Morozov

We give a review of scientific results of the remarkable Russian mathematician Albert Dmitrievich Morozov who is the world’s recognized leader in the theory of nearly Hamiltonian systems and one of the founders of the modern mathematical theory of synchronization in oscillatory systems. This review was prepared in connection with the 80th birthday of A.D. Morozov and the authors wish him all the best, good health and creative success.