Smooth normal forms for integrable hamiltonian systems near a focus-focus singularity
arXiv:1103.3282
Abstract
We prove that completely integrable systems are normalisable in the C infinity category near focus-focus singularities.
29 pages
arXiv:1103.3282
We prove that completely integrable systems are normalisable in the C infinity category near focus-focus singularities.
29 pages