Geodesic flows
Master 2, ENS de Lyon
January-March 2024

Instructor

Schedule

  • Monday 8:30am - 11:30am, room M7-411

Announcements

Calendar

January 8 Introduction to the course
Symplectic linear algebra
Symplectic manifolds, symplectomorphisms, and Hamiltonian diffeomorphisms
Contact manifolds and Reeb flows
January 15: Symplectic geometry of tangent bundles
Geodesic flows
January 22: The variational theory of geodesics
Existence of a closed geodesic on any closed Riemannian manifold
January 29: Simple spectrum of a Riemannian 2-sphere
Spectral characterization of Zoll 2-spheres
Theorem of the three simple closed geodesics
February 5: The space of unparametrized simple loops on a closed surface
Curve shortening flow
February 19: Proof of the spectral characterization of Zoll 2-spheres
March 4: Surfaces of section of Reeb flows on closed 3-manifolds
Poincaré recurrence theorem
Hyperbolic dynamics: stable and unstable manifolds, heteroclinics, homoclinics
March 11: More hyperbolic dynamics: shadowing lemma, existence of periodic orbits
Existence of global surfaces of section for geodesic flows of closed Riemannian surfaces
UMPA ENS de Lyon Université de Lyon