Smooth normal forms for integrable Hamiltonian systems near a focus–focus singularity

By San Vũ Ngọc, C. Wacheux. 2011

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We prove that completely integrable systems are normalizable in the C∞ category near a focus–focus singularity.

Subfields: Geometry and Topology, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/2b3f048f60b77b6bdff64f102d4452fe87fb5617