Open AccessMathematics
N. Zung
Abstract
Abstract 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.
Citation format
ZUNG, N. A note on focus-focus singularities [preprint]. arXiv, 1997. arXiv:math/0110147.