In this paper we are concerned with the existence of nontrivial periodic solutions of an asymptotically linear Hamiltonian systems when a kind of resonance condition is satisfied. We prove several new existence results via the Morse theory, the Garlerkin methods, and the Moslov index theory. (C) 1998 Academic Press.
机构:
Nankai Univ, Sch Math Sci, Tianjin 300071, Peoples R China
Nankai Univ, LPMC, Tianjin 300071, Peoples R ChinaNankai Univ, Sch Math Sci, Tianjin 300071, Peoples R China
机构:
Yunnan Normal Univ, Dept Math, Kunming 650092, Yunnan, Peoples R China
Chinese Acad Sci, AMSS, Inst Math, Beijing 100080, Peoples R ChinaYunnan Normal Univ, Dept Math, Kunming 650092, Yunnan, Peoples R China
Zhao, Fukun
Zhao, Leiga
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机构:
Beijing Univ Chem Technol, Dept Math, Beijing 100029, Peoples R ChinaYunnan Normal Univ, Dept Math, Kunming 650092, Yunnan, Peoples R China
Zhao, Leiga
Ding, Yanheng
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Chinese Acad Sci, AMSS, Inst Math, Beijing 100080, Peoples R ChinaYunnan Normal Univ, Dept Math, Kunming 650092, Yunnan, Peoples R China