Symplectic capacities
Master 2, ENS de Lyon
January-March 2025

Instructor

Schedule

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

Announcements

  • All the students attending the course should subscribe to it in the portail des études.
  • The lecture of February 17th was canceled, and there will be an extra lecture on Thursday March 20th at 2:00pm, in room Lilas.

Calendar

January 13: Symplectic manifolds
Hamiltonian vector fields
Characteristic foliation on hypersurfaces
Statement of Gromov non-squeezing
Contact manifolds
January 20: Restricted contact-type hypersurfaces
Weinstein conjecture
Almost existence of closed orbits on family of hypersurfaces
Definition of symplectic capacity
January 27: Remarks on symplectic capacities
Gromov width
Cylindrical capacity
Hofer-Zehnder capacity
Hamiltonian action functional
February 3: Abstract critical point theory
Palais-Smale condition
Min-max theorem
Sobolev setting for the Hamiltonian action functional
February 17: (canceled lecture)
February 24: Regularity of the critical points of the Hamiltonian action
Palais-Smale condition for the Hamiltonian action
Existence of 1-periodic Hamiltonian orbits
March 10: \(C^0\)-rigidity of symplectomorphisms
Proof of the almost existence of closed orbits on family of hypersurfaces
March 17: Introduction to Hofer geometry
Hofer norm
displacement energy
action spectrum
action selectors
March 20: The displacement energy as a capacity
UMPA ENS de Lyon Université de Lyon