Abstract
This work focuses on higher-dimensional quasi-periodically forced nonlinear beam equation. This means studying
with periodic boundary conditions, where \(\varepsilon \) is a small positive parameter, \(\phi (t)\) is a real analytic quasi-periodic function in t with frequency vector \(\omega =(\omega _1,\omega _2,\ldots ,\omega _m).\) It is proved that there are many quasi-periodic solutions for the above equation via KAM theory.
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The authors would like to thank the referees for their invaluable comments and suggestions which help to improve the presentation of this paper.
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The first author is partially supported by NSFJS Grant (BK 20170472). The second author is supported by the NSFC Grant (11371090). The third author is supported by NSFC Grant (11771077).
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Shi, Y., Xu, J. & Xu, X. Quasi-periodic Solutions for a Class of Higher Dimensional Beam Equation with Quasi-periodic Forcing. J Dyn Diff Equat 31, 745–763 (2019). https://doi.org/10.1007/s10884-018-9657-z
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DOI: https://doi.org/10.1007/s10884-018-9657-z