Article ID Journal Published Year Pages File Type
844390 Nonlinear Analysis: Theory, Methods & Applications 2007 11 Pages PDF
Abstract

In this paper we formulate a theorem on the persistence of elliptic lower-dimensional invariant tori for nearly integrable analytic Hamiltonian systems under the first Melnikov condition and Rüssmann’s non-degeneracy condition, and give the measure estimates of parameters for the non-resonance conditions under Rüssmann’s non-degeneracy condition, which is essential for the proof of our result.

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