We prove the existence of nontrivial critical points for a class of superquadratic nonautononnous secondorder Hamiltonian systems by applying condition (C)* to critical point theory, and some new solvability conditions of nontrivial periodic solutions are obtained. (c) 2006 Elsevier Inc. All rights reserved.
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Shandong Normal Univ, Coll Math, Jinan, Shandong, Peoples R China
Missouri State Univ, Dept Math, Springfield, MO 65897 USAShandong Normal Univ, Coll Math, Jinan, Shandong, Peoples R China
Hu, Shouchuan
Papageorgiou, Nikolas S.
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Natl Tech Univ Athens, Dept Math, Athens 15780, GreeceShandong Normal Univ, Coll Math, Jinan, Shandong, Peoples R China
机构:
Univ Reggio Calabria, Fac Ingn, Dipartimento Informat Matemat Elettron & Trasport, I-89100 Reggio Di Calabria, ItalyUniv Reggio Calabria, Fac Ingn, Dipartimento Informat Matemat Elettron & Trasport, I-89100 Reggio Di Calabria, Italy
Bonanno, Gabriele
Livrea, Roberto
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Univ Reggio Calabria, Fac Architettura, Dipartimento Patrimonio Architetton & Urbanist, I-89100 Reggio Di Calabria, ItalyUniv Reggio Calabria, Fac Ingn, Dipartimento Informat Matemat Elettron & Trasport, I-89100 Reggio Di Calabria, Italy