Zusammenfassung für den Vortrag am 07.11.2002 (16:45 Uhr)

Octav Cornea (Université de Lille + Universität Leipzig)

Hopf invariants and periodic orbits of hamiltonian flows

We use Morse theory and a particular homotopy theoretic tool - a variant of the Hopf invariant - to discuss a method of detection of periodic orbits of hamiltonian flows.