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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Cent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R ChinaCent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R China
Zhang, Qiongfen
Tang, X. H.
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Cent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R ChinaCent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R China
Tang, X. H.
Zhang, Qi-Ming
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Cent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R ChinaCent S Univ, Sch Math Sci & Comp Technol, Changsha 410083, Hunan, Peoples R China