Homoclinic points and intersections of Lagrangian submanifolds

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In this paper, we prove certain persistence properties of the homoclinic points in Hamiltonian systems and symplectic diffeomorphisms. We show that, under some general conditions, stable and unstable manifolds of hyperbolic periodic points intersect in a very persistent way and we also give some simple criteria for positive topological entropy. The method used is the intersection theory of Lagrangian submanifolds of symplectic manifolds.
Original languageEnglish
Pages (from-to)243
JournalDiscrete and Continuous Dynamical Systems
StatePublished - 2000


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