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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

    Lieu

    Rennes

    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.

    et

    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

    QR-Code

    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

    Speakers:

    • 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.

    Programme

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

    Correspondants

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

    Historique

    Historique du séminaire

    Affiche

    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.

Thematic semester 2015 - PDE and Large Time Asymptotics

Partial differential equations arise in a wide range of problems that model physical phenomena. The thematic semester organized by the Centre Henri Lebesgue will focus on recent advances in various areas of both fundamental and applied research in this field: quantum mechanics and mathematical physics, fluid dynamics equations, kinetic theory. Specific attention will be paid to the mathematical techniques that allow for a decsription of the large time behavior of solutions.

Program

Master Program

The universities of Nantes and Rennes propose a specific Master program strengthened in analysis of partial differential equations and numerical analysis, related to the topics of the thematic semester. More information can be found here.

Summer schools

Gravity driven flows and environmental risks (in partnership with the GDR CNRS EGRIN)

Piriac-sur-Mer, from June 1st to June 4th

Organization board: Christophe Berthon, Benjamin Boutin, Anaïs Crestetto, Carine Lucas, Hélène Mathis

Scientific board: Christophe Ancey, François Bouchut, Frédéric Coquel, Stéphane Cordier, Josselin Garnier, Sebastian Noelle, Randall J. LeVeque, Carlos Pares, Jacques Sainte-Marie, Stéphane Zaleski

Normal forms and large time behavior for nonlinear PDE

Nantes, from June 22nd to July 3rd

Organization board: Erwan Faou, Benoît Grébert, Eric Paturel

Meetings

Mathematical physics (in partnership with the ANR NOSEVOL program, GDR CNRS Quantum Dynamics)

Nantes, from February 2nd to February 6th

Organization board: Frédéric Hérau, Alain Joye, François Nicoleau, Stéphane Nonnenmacher, Joe Viola, San Vũ Ngọc

Scientific board: Vincent Bruneau, Eric Cancès, Stephan De Bièvre, Jan Derezinski, Bertrand Georgeot, François Germinet, Gian-Michele Graf, Frédéric Hérau, Alain Joye, Jean-Philippe Nicolas, Stéphane Nonnenmacher, Claude-Alain Pillet, Benjamin Schlein, Sergey Skipetrov, San Vũ Ngọc, Simone Warzel, Maciej Zworski

Young French Applied Mathematicians Meeting (in partnership with GDR CNRS Analysis of partial differential equations)

Saint Brévin, from March 30th to April 1st

Organization board: Antoine Benoit, Jean-François Coulombel, Vincent Duchêne, Damien Gobin, Frédéric Hérau, Hélène Hivert, Salomé Oudet, Virgile Robbe, Ophélie Rouby, Valentin Samoyeau

Scientific board: Sylvie Benzoni, Christophe Besse, Franck Boyer, David Lannes, Jérôme Le Rousseau, Eric Lombardi, Frédéric Rousset

Journées EDP (in partnership with GDR CNRS Analysis of partial differential equations)

Roscoff, from June 1st to June 5th

Organization board: Jean-François Coulombel, Frédéric Rousset

Scientific board: Nalini Anantharaman, Dario Bambusi, Nicolas Burq, Piero D’Ancona, Nils Dencker, Isabelle Gallagher, David Lannes, Gilles Lebeau, Laure Saint-Raymond, Luis Vega

Workshops

Long time dynamics and regularity for hydrodynamical systems (in partnership with the ANR program AFoMEN, the ANR program DYFICOLTI)

Nantes, from March 11th to March 13th

Organization board: Frédéric Bernicot, Vincent Duchêne

Magnetic fields and semi-classical analysis

Rennes, from May 19th to May 22nd

Organization board: Nicolas Raymond, San Vũ Ngọc, Xue Ping Wang

Scientific board: Virginie Bonnaillie-Noël, Yves Colin de Verdière, Bernard Helffer, Francis Nier, Nicolas Raymond, San Vũ Ngọc, Xue Ping Wang

Mathematical problems in kinetic theory

Rennes, from May 26th to May 29th

Organization board: Anaïs Crestetto, Mohammed Lemou, Florian Mehats

Multiscale numerical methods for differential equations

Rennes, from August 25th to August 27th

Organization board: Benjamin Boutin, Philippe Chartier, Nicolas Crouseilles

Partners

Irmar LMJL ENS Rennes LMBA LAREMA

Affiliation

ANR CNRS Rennes 1 Rennes 2 Nantes INSA Rennes INRIA ENSRennes UBO UBS Angers UBL