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  • 5 minutes Lebesgue
    Mar 28, 2017

    Les vidéos des exposés seront mises en ligne quelques jours après l'exposé. Vidéothèque

    Prochain exposé : Rediffusion :

    28-03-2017:  Marc Raynaud La machine de Turing



    Exposés à venir:

    04-04-2017:  Barbara Schapira

    25-04-2017:  Basile Pillet

  • XVI Journées Louis Antoine
    Mar 30, 2017 to Mar 31, 2017

    Statistiques : regret et parcimonie

    Deux mini-cours de 3 heures

    Gilles Stoltz (CNRS, HEC): Bandits stochastiques avec un nombre fini de bras : résultats d'optimalité sur le regret.


    Sara van de Geer (ETH Zürich) :Estimation and testing under sparsity.

    et un exposé complémentaire

    Cyril Lacoste (Université de Rennes 1): Statistiques et sommes de trois carrés.

    Voir le site des JLA

  • School - Flows and Limits in Kähler Geometry
    Apr 18, 2017 to Apr 22, 2017

    Nantes, from April 18th to April 22nd

    Organization board: Sébastien Boucksom, Yann Rollin, Carl Tipler

    Scientific board: Claudio Arezzo, Olivier Biquard, Paul Gauduchon, Michael Singer

    Kähler geometry is a very active research field, at the crossroads between algebraic and Riemannian geometry. Important breakthrough, that lead to solve the Yau-Tian-Donaldson conjecture in the Fano case, have been achieved recently. A spring school involving mini-lectures and talks around this thread of new ideas in Kähler geometry is organized at Nantes University. The goal of the school is to develop certain technical skills, useful to address a variety of important questions in algebraic geometry and global analysis on manifolds, aimed for PhD students and young researchers. Geometric flows, like the Kähler-Ricci flow for instance, and the associated quantification by the Donaldson dynamical system, will be among the essential tools dealt with during the school.

  • Conference - Teichmüller Theory in Higher Dimension and Mirror Symmetry
    Apr 24, 2017 to Apr 28, 2017


    Angers, from April 24th to April 28th

    Organization board: Frédéric Mangolte, Etienne Mann, Laurent Meersseman, Alexis Roquefeuil

    Teichmüller theory and mirror symmetry are very active domains. In this conference, we propose two series of lectures by two world leader mathematicians :

    • Misha Verbitsky on Teichmüller theory
    • Dimitri Zvonkine, University Pierre et Marie Curie


    • Gaetan Borot, Max Planck Institut, Bonn
    • Fabrizio Catanese, University of Bayreuth
    • Ekaterina Amerik, University of Orsay (tbc)
    • Maxim Kontsevich, IHES (tbc)
    • Thomas Reichelt, University of Heidelberg
    • Jacopo Stoppa, SISSA
    • Claude Sabbah, Ecole polytechnique
    • Adrien Sauvaget, University Pierre et Marie Curie
    • Andrei Teleman, University of Aix-Marseille
  • Séminaire Quimpériodique
    Jun 1, 2017 to Jun 2, 2017

    Ce séminaire de géométrie, complètement à l'Ouest, réunit à Quimper, trois fois l'an, pour deux journées, le jeudi et le vendredi, des géomètres venus des régions Bretagne et Pays de Loire.


    Inas Amacha (LMBA): TBA;
    Vincent Colin (LMJL): TBA;
    Bertrand Deroin (ENS Paris): TBA;
    Victor Kleptsyn (IRMAR): TBA;
    Paul Laurain (univ. Paris VII): TBA.


    Guillaume Deschamps, LMBA, Brest
    Laurent Meersseman, LAREMA, Angers
    Gaël Meigniez, LMBA, Vannes
    Yann Rollin, LMJL, Nantes
    Frédéric Touzet, IRMAR, Rennes


    Historique du séminaire


    Télecharger l'affiche ici

  • Conference - Infinite measure Dynamics
    Jun 6, 2017 to Jun 9, 2017

    Brest, from June 6th to June 9th

    Organization board: Yves Coudène, François Maucourant, Françoise Pène, Barbara Schapira, Samuel Tapie, Annick Nicolle

    Scientific board: Jon Aaronson, Jean-Pierre Conze, Gilles Courtois, Domokos Szasz

    This conference will focus on dynamical systems which naturally preserve a measure with infinite mass. These systems appear in a geometric or probabilistic context, or may come from natural sciences. When the invariant measure has infinite mass, recurrence is no longer automatic, usual mixing properties disappear and new asymptotical properties (such as rationnal ergodicity) may occur. Such systems may develop various and subtil behaviours, which could not exists in finite measure dynamics.

    This conference will gather international experts on this topic, and will allow young researcher to have an easy access to the large recent developpment on such questions.

  • Conference - Families of algebraic dynamical systems
    Jun 12, 2017 to Jun 16, 2017

    Rennes, from June 12th to June 16th

    Organization board: Serge Cantat, Christophe Dupont

    Scientific board: Matthew Baker, Eric Bedford, Serge Cantat, Christophe Dupont, Mattias Jonsson

  • Conference - Random walks on algebraic structures-On honour of Yves Guivarc'h
    Jun 19, 2017 to Jun 23, 2017

    Rennes, from June 19th to June 23rd

    Organization board: Bachir Bekka, Nizar Demni

    Scientific board: Bachir Bekka, Emmanuel Breuillard, Nizar Demni, Alex Lubotzky

    The conference deals with themes around random walks on algebraic structures. Dynamical sytems on groups, homogeneous spaces, and related structures (graphs, quantum groups , groupoids,...) are rich objects, involving various fields of mathematics (probability, group theory, topology, number theory, operator algebras, Banach space geometry, etc). They are also useful as modelling tools for other sciences (physics, computer science, economics, etc); for instance, expander graphs, which are of interest in theoretical computer science, are graphs for which the associated random walk has special spectral properties and their explicit construction involves sophisticated tools such as Kazhdan's property (T) or Selberg's inequality. The conference aims to give a flavor of the various aspects of the subject by bringing together some experts with major contributions to the field. This conference will also be the opportunity to celebrate the 80th birthday of Yves Guivarc'h, who played a major part in the development of probability on algebraic and geometric structures, a subject with an ever growing interest for the last 30 years.

Workshop - Mathematical problems in kinetic theory


Download the poster in pdf


Registration is now closed.

You can find useful informations in the updated "Practical information" page.

Rennes, from May 26th to May 29th

Organization board: Anaïs Crestetto, Mohammed Lemou, Florian Méhats

Kinetic theory is an important field of research that focuses the efforts of re-known international groups coming from various scientific communities. Signifiant advances has been achieved in the last decades, covering mathematical, computational and modeling aspects, but many challenging problems still remain unsolved in this area. Application fields of kinetic theory are numerous: gases dynamics, plasmas and fusion problems, astrophysics and celestial dynamics, population dynamics, biology and cellular activity, socioeconomics and finance, etc. From the modeling point of view, the kinetic models can be thought as intermediate descriptions between fluid models (often insufficient) and particles models (too costly for a practical use). Kinetic systems are in general described by a distribution function depending on time and space but also on additional variables (velocity, character, size, etc). Most of the known kinetic models are given by equations of Boltzmann type, that may be coupled to Maxwell equations. The complexity of these models and the diversity of their structures provide a huge and extremely rich area of research for mathematical analysis, modeling and numerical simulation.

This workshop aims to present recent developments of mathematical research on the understanding of kinetic models. It will be an opportunity to bring together internationally re-known researchers and young researchers in this domain, in order to exchange the different point of views and to promote the emergence of innovative ideas.

Several questions will be investigated, including: large time behavior of kinetic equations, formal and rigorous links with N-particles systems, the development of numerical strategies that are suitable for computer simulations, as well as important modeling aspects in various application fields. Open problems will be discussed as well as new applications and research directions.


Marc Briant (Brown University)
Kleber Carrapatoso (ENS Cachan)
Frédérique Charles (Université Pierre et Marie Curie, Paris 6)
Young-Pil Choi (Imperial College London)
Esther Daus (Vienna University of Technology)
Pierre Degond (Imperial College London)
Laurent Desvilllettes (ENS Cachan)
Amit Einav (University of Cambridge)
Irene M. Gamba (University of Texas at Austin)
François Golse (Ecole Polytechnique)
Thierry Goudon (INRIA Sophia-Antipolis)
Maxime Hauray (Université d'Aix-Marseille)
Slim Ibrahim (University of Victoria)
Pierre-Emmanuel Jabin (University of Maryland)
Antoine Mellet (University of Maryland)
Sara Merino Aceituno (University of Cambridge)
Evelyne Miot (Université Paris-Sud 11)
Stéphane Mischler (Université Paris-Dauphine)
Sébastien Motsch (Arizona State University)
Benoît Perthame (Université Pierre et Marie Curie, Paris 6)
Thomas Rey (Université Lille 1)
Samir Salem (Aix-Marseille Université)
Maja Taskovic (The University of Texas at Austin)




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