A KAM Theorem for Hamiltonian Partial Differential Equations with Unbounded Perturbations |
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Authors: | Jianjun Liu Xiaoping Yuan |
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Affiliation: | 1.School of Mathematical Sciences and Key Lab of Math. for Nonlinear Science,Fudan University,Shanghai,P.R. China |
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Abstract: | We establish an abstract infinite dimensional KAM theorem dealing with unbounded perturbation vector-field, which could be applied to a large class of Hamiltonian PDEs containing the derivative ? x in the perturbation. Especially, in this range of application lie a class of derivative nonlinear Schrödinger equations with Dirichlet boundary conditions and perturbed Benjamin-Ono equation with periodic boundary conditions, so KAM tori and thus quasi-periodic solutions are obtained for them. |
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