Normal forms and bifurcations of vector fields

整个项目集中在分析动力学的基本问题，特别是低维动力系统取决于参数：1维同构，平面向量场，无论是真实的向量场或复杂的叶理，和线性微分系统。动力系统是依赖于时间的系统。很难找到一个给定系统的显式解。庞加莱是创始人的几何方法来研究和理解的解决方案的动力系统。这些方法允许得出定性的结论，即使没有明确的公式的解决方案。为了更好地理解动力系统，重要的是攻击它们的弱点：相空间中的奇点和参数空间中的分叉值。该研究项目正是集中在这些问题：

The whole project is centered on fundamental problems in analytic dynamics, especially low dimensional dynamical systems depending on parameters: 1-dimensional diffeomorphisms, planar vector fields, either real vector fields or complex foliations, and linear differential systems. Dynamical systems are systems which depend on the time. It is very difficult to find explicit solutions of a given system. Poincaré was the founder of geometric methods to study and understand the solutions of dynamical systems. These methods allow drawing qualitative conclusions, even without having explicit formulas for the solutions. In order to better understand dynamical systems, it is important to attack them at their weak points: the singularities in phase space and the bifurcation values in parameter space. The research project is centered precisely on these matters: