Periodic solutions for a class of superquadratic Hamiltonian systems. (English) Zbl 1123.34311

The existence of nontrivial critical points for a class of superquadratic nonautonomous second order Hamiltonian systems is considered. Some new results on the existence of nontrivial periodic solutions are obtained.


34C25 Periodic solutions to ordinary differential equations
37J45 Periodic, homoclinic and heteroclinic orbits; variational methods, degree-theoretic methods (MSC2010)
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