A note on the resonance case for asymptotically linear wave equations

zbMath0566.35069MaRDI QIDQ1059221

Shaoping Wu, Jia Quan Liu

Publication date: 1984

Published in: Chinese Annals of Mathematics. Series B (Search for Journal in Brave)

zbMATH Keywords

wave equationcritical pointvariational methodmultiple periodic solutionsresonanceinfinitely many solutionstruncation techniqueindex theories

Mathematics Subject Classification ID

Equations involving nonlinear operators (general) (47J05) Periodic solutions to PDEs (35B10) Variational methods applied to PDEs (35A15) Second-order nonlinear hyperbolic equations (35L70) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05)

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