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zbMath1240.34220MaRDI QIDQ3014158

Dixiang Cheng, Ji Ming Zheng

Publication date: 19 July 2011

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

periodic solutions second-order Hamiltonian systems symmetrical mountain-pass lemma

Mathematics Subject Classification ID

Periodic solutions to ordinary differential equations (34C25) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05)

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