Invariant manifolds for a class of dispersive, Hamiltonian, partial differential equations
نویسنده
چکیده
We construct an invariant manifold of periodic orbits for a class of non-linear Schrödinger equations. Using standard ideas of the theory of center manifolds, we rederive the results of Soffer and Weinstein ([SW1], [SW2]) on the large time asymptotics of small solutions (scattering theory).
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