Critical Point Theory and Hamiltonian Systems

FACHGEB

Résumé
Presents the basic tools of critical point theory such as minimization, convex functions and Fenchel transform, dual least action principle, Ekeland variational principle, minimax methods, Lusternik- Schirelmann theory for Z2 and S1 symmetries, Morse theory for possibly degenerate critical points and non-degenerate critical manifolds.

Contenu
1 The Direct Method of the Calculus of Variations.- 2 The Fenchel Transform and Duality.- 3 Minimization of the Dual Action.- 4 Minimax Theorems for Indefinite Functional.- 5 A Borsuk-Ulam Theorem and Index Theories.- 6 Lusternik-Schnirelman Theory and Multiple Periodic Solutions with Fixed Energy.- 7 Morse-Ekeland Index and Multiple Periodic Solutions with Fixed Period.- 8 Morse Theory.- 9 Applications of Morse Theory to Second Order Systems.- 10 Nondegenerate Critical Manifolds.