On semi-global invariants for focus-focus singularities
Symplectic Geometry
2007-05-23 v1 Dynamical Systems
Abstract
This article gives a classification, up to symplectic equivalence, of singular Lagrangian foliations given by a completely integrable system of a 4-dimensional symplectic manifold, in a full neighbourhood of a singular leaf of focus-focus (=nodal) type.
Cite
@article{arxiv.math/0208245,
title = {On semi-global invariants for focus-focus singularities},
author = {San Vu Ngoc},
journal= {arXiv preprint arXiv:math/0208245},
year = {2007}
}
Comments
19 pages 4 fig. Written in june 2001. To appear in Topology