You are using the HAL (Hyper Articles on Line) of the Laurent Schwartz Center for Mathematics (UMR 7640). This collection contains all laboratory publications listed since 2008, and some publications prior to 2008.

The Laurent Schwartz Center for Mathematics is a CNRS research unit at École polytechnique and a founding member of the Fondation mathématique Jacques Hadamard. Its ambition is to conduct research on the highest international level over a large spectrum of mathematical disciplines. Forward-looking recruiting strategies and the presence of CNRS researchers guarantee a dynamic research environment. The centre is organised around three groups, Algebra and Arithmetic, Analysis and PDEs, Geometry and Dynamics. In addition to their research and publishing activities, all three groups are actively involved in the organization of several reputable seminar series.

HAL is an open archive developed by the CCSD (Centre for Direct Scientific Communication) to collect scientific publications researchers. HAL cooperates with the international arXiv archive.