Abstract
We investigate the influence of small deformations of a symplectic structure and perturbations of the Hamiltonian on the behavior of a completely integrable Hamiltonian system. We show that a Whitney-smooth family of coisotropic invariant tori of the perturbed system emerges in the neighborhood of a certain submanifold of the phase space.
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Kubichka, A.A., Parasyuk, I.O. Bifurcation of a Whitney-Smooth Family of Coisotropic Invariant Tori of a Hamiltonian System under Small Deformations of a Symplectic Structure. Ukrainian Mathematical Journal 53, 701–718 (2001). https://doi.org/10.1023/A:1012574132151
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DOI: https://doi.org/10.1023/A:1012574132151