11-58 Jianjun Liu, Xiaoping Yuan
A KAM Theorem for Hamiltonian Partial Differential Equations with Unbounded Perturbations (447K, .pdf) Apr 13, 11
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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 $\partial_x$ in the perturbation. Especially, in this range of application lie a class of derivative nonlinear Schrodinger 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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