A note on focus-focus singularities
动力系统
2007-05-23 v1 微分几何
摘要
We give a topological and geometrical description of focus-focus singularities of integrable Hamiltonian systems. In particular, we explain why the monodromy around these singularities is non-trivial, a result obtained before by J.J. Duistermaat and others for some concrete systems.
引用
@article{arxiv.math/0110147,
title = {A note on focus-focus singularities},
author = {Nguyen Tien Zung},
journal= {arXiv preprint arXiv:math/0110147},
year = {2007}
}
备注
old paper put here for archival purposes