We show existence of infinitely many homoclinic orbits at the origin for a class of singular second-order Hamiltonian systems ii + V-u(t,u) = 0, -infinity < t < infinity. We use variational methods under the assumption that V(t, u) satisfies the so-called "Strong-Force" condition. (C) 2013 Elsevier Inc. All rights reserved.
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Nankai Univ, Sch Math Sci, Tianjin 300071, Peoples R ChinaNankai Univ, Sch Math Sci, Tianjin 300071, Peoples R China
Zhang, Qingye
Liu, Chungen
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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
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Dalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R China
Xinyang Normal Univ, Dept Math, Xinyang 464000, Peoples R ChinaDalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R China
Yang, Ming-Hai
Han, Zhi-Qing
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Dalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R ChinaDalian Univ Technol, Sch Math Sci, Dalian 116024, Peoples R China