MS#11. Hamiltonian Catastrophes, 1972 Subjects: Hamiltonian Dynamics Abstract: In the five years since the publication of Foundations of Mechanics there have been a number of results extending our understanding of the qualitative structure of conservative mechanical systems, and I would like to take this opportunity to bring up to date the picture presented in that book, and to correct several mistakes. [PDF] 38 pages, 472 KB Last revised by Ralph Abraham