Existence and multiplicity results for non-autonomous second-order Hamiltonian systems

Abstract

In this article, using the least action principle and minimax methods in critical point theory, some existence and multiplicity results for periodic solutions of second-order Hamiltonian systems are obtained.

Keywords

• periodic solutions
• the least action principle
• minimax methods
• second-order hamiltonian systems
• 34c25
• 37j45
• 34c52