Multiple periodic solutions of autonomous semilinear wave equations

DOI10.12775/TMNA.1994.011zbMath0818.35064MaRDI QIDQ1337623

Laura Olian Fannio, Marco Degiovanni

Publication date: 20 August 1995

Published in: Topological Methods in Nonlinear Analysis (Search for Journal in Brave)

zbMATH Keywords

semilinear wave equationcritical point theorem for \(S^ 1\)-invariant functionals

Mathematics Subject Classification ID

Periodic solutions to PDEs (35B10) 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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