Abstract and Applied Analysis
Volume 1 (1996), Issue 3, Pages 277-289
doi:10.1155/S1085337596000140
Existence of multiple critical points for an asymptotically quadratic functional with applications
Shujie Li
and Jiabao Su
Institute of Mathematics, Academia Sinica, Beijing 100080, China
Abstract
Morse theory for isolated critical points at infinity is used for the existence of multiple critical points for an asymptotically quadratic functional. Applications are also given for the existence of multiple nontrivial periodic solutions of asymptotically Hamiltonian systems.