Abstract
In this paper, we consider a class of nonlinear beam equations on flat tori \(\mathbb {T}^d_{\mathfrak {L}}\),
and prove that the equation admits many quasi-periodic solutions with the non-resonant frequencies \(\omega \). The main proof is based on an abstract Nash-Moser type implicit function theorem developed in Berti and Bolle (Nonlinearity 25(9):2579–2613, 2012; J Eur Math Soc 15(1):229–286, 2013).
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Acknowledgements
The work is supported by the Postdoctoral Foundation of Jiangsu Province(No. 2021K163B), China Postdoctoral Foundation (No. 2021M692717), and the National Natural Science Foundation of China (No. 12101542).
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Sun, Y. Quasi-Periodic Solutions of Derivative Beam Equation on Flat Tori. Qual. Theory Dyn. Syst. 21, 121 (2022). https://doi.org/10.1007/s12346-022-00654-2
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DOI: https://doi.org/10.1007/s12346-022-00654-2