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Directory Results for Periodic solutions of a weakly nonlinear wave equation in one ... - dml to Periodic Solutions of Hamiltonian Systems.. The existence of periodic solutions of Hamiltonian systems of ordinary differential equations is proved in various settings. A case in which energy is prescribed is treated in Section 1. Both free and force

Periodic solutions of a weakly nonlinear wave equation in one ... - dml
Periodic Solutions of Hamiltonian Systems of Prescribed Period.. This paper is divided in two parts. In the first part some abstract critical point theorems are proved using minimax arguments. The second part is devoted to applications. We study the
Periodic Solutions of Hamiltonian Systems.. The existence of periodic solutions of Hamiltonian systems of ordinary differential equations is proved in various settings. A case in which energy is prescribed is treated in Section 1. Both free and force