Hamiltonian Systems with Three or More Degrees of Freedom 124 The coexistence and persistence of

The coexistence and persistence of any number of strange attractors in a simple three-dimensional scenario are proved

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Hamiltonian Systems with Three or More Degrees of Freedom 124 The coexistence and persistence ofA survey of current knowledge about Hamiltonian systems with three or more degrees of freedom and related topics. The Hamiltonian systems appearing in most of the applications are non integrable. Hence methods to prove non integrability results are presented and the different meaning attributed to non integrability are discussed. For systems near an integrable one, it can be shown that, under suitable conditions, some parts of the integrable