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Hamiltonian suspension of perturbed Poincaré sections and an application

Published online by Cambridge University Press:  09 April 2014

Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal. e-mail:
Universidade Técnica de Lisboa- ISEG, Rua do Quelhas 6, 1200-781 Lisboa, Portugal. e-mail:


We construct a Hamiltonian suspension for a given symplectomorphism which is the perturbation of a Poincaré map. This is especially useful for the conversion of perturbative results between symplectomorphisms and Hamiltonian flows in any dimension 2d. As an application, using known properties of area-preserving maps, we prove that for any Hamiltonian defined on a symplectic 4-manifold M and any point pM, there exists a C2-close Hamiltonian whose regular energy surface through p is either Anosov or contains a homoclinic tangency.

Research Article
Copyright © Cambridge Philosophical Society 2014 

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