Whiskered Tori for Forced Beam Equations with Multi-dimensional Liouvillean Frequency
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DOI: 10.1007/s10884-019-09754-1
Abstract: In this paper we develop a Kolmogorov–Arnold–Moser (KAM) theory close to two fixed points for quasi-periodically forced nonlinear beam equation $$\begin{aligned} \begin{aligned} y_{tt}+my+y_{xxxx}=y^{3}+ \varepsilon f(\omega t,x,y),\ \ x\in [0,\ \pi ], \end{aligned} \end{aligned}$$ y tt… read more here.
Keywords: frequency; aligned xxxx; end aligned; begin aligned ... See more keywords