On the number of periodic trajectories for a Hamiltonian flow on a convex energy surface. (English) Zbl 0449.70014
MSC:
70H05 | Hamilton’s equations |
58E05 | Abstract critical point theory (Morse theory, Lyusternik-Shnirel’man theory, etc.) in infinite-dimensional spaces |
58E15 | Variational problems concerning extremal problems in several variables; Yang-Mills functionals |
34C25 | Periodic solutions to ordinary differential equations |