Dynamical Systems and Bifurcations : Proceedings of a Workshop Held in Groningen, The Netherlands, April 16-20, 1984

An elementary proof of the conley Zehnder theorem in symplectic geometry.- An A-Priori estimate for oscillatory-equations.- On the structure of germs of vector fields in ?3 whose linear part generates rotations.- Fixed point results for symplectic maps related to the arnold - conjecture.- Topological invariants as numbers of translation.- Abelian integrals and global hopf bifurcations.- On the numerical determination of the dimension of an attractor.- Global stability of generic two-parameter families of gradients on three-manifolds.