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  • Topology and dynamics

    Research

    Topology and dynamics

    Head: Sylvain Crovisier
    Assistant: Céline Gautier
    Weekly seminar: Thursday afternoons 

     

    The team has three main areas of interest:

    • Differential geometry and symplectic topology
    • Group theory and operator algebras
    • Dynamical systems and ergodic theory.        

    These three themes have many interactions. For example, ergodic geometry bridges the gap between geometry and dynamics. Similarly, geometric group theory interacts with differential geometry and operator algebras.
                                                                                                         
    Interactions also exist with other teams. Ergodic theory and group geometry interact with the probability and statistics team. Differential geometry and the theory of holomorphic dynamical systems bridge the gap with the complex geometry components of the harmonic analysis and arithmetic, and algebraic geometry teams.                                                                                          

    The team hosts the Inria project-team Datashape dedicated to the topological analysis of data, in particular using techniques also seen in symplectic topology.

    Team members

    Nom Fonction / Statut Site Bureau

    Upcoming events

    21
    Oct. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    Mauro Porta
    IRMA (Strasbourg)
    14h00 - 15h00
    21
    Oct. 2025
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    GT des doctorants ANH et ANEDP
    Julien Malartre
    LAGA
    10h30 - 11h30
    22
    Oct. 2025
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    GT JSJ for RAAGs
    14h30 - 16h30
    22
    Oct. 2025
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    Séminaire Datashape
    Mathijs Wintraecken
    Inria Sophia Antipolis
    11h00 - 12h00
    23
    Oct. 2025
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    Séminaire Géométrie Topologie Dynamique
    Marlies Gerber
    Indiana University
    14h00 - 15h00
    23
    Oct. 2025
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    Séminaire Analyse Numérique et EDP
    Louis-Pierre Chaintron
    Ecole Polytechnique Fédérale de Lausanne (EPFL)
    03
    Nov. 2025
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    GT Groupes
    Vincent Dumoncel
    Université Paris-Cité
    14h00 - 15h00
    04
    Nov. 2025
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    Séminaire Analyse Harmonique
    TBA
    Romain Pétrides
    IMJ-PRG
    14h00 - 15h00
    04
    Nov. 2025
    logo_team
    GT des doctorants ANH et ANEDP
    Léo Mandô
    LMO
    10h30 - 11h30
    04
    Nov. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    Valentin Hernandez
    LMO
    14h00 - 15h00
    05
    Nov. 2025
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    Séminaire des doctorants
    TBA
    Jad Koleilat
    14h00 - 15h00
    06
    Nov. 2025
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    Séminaire Analyse Numérique et EDP
    TBA
    Marina Ferreira
    Institut de Mathématiques de Toulouse
    14h00 - 15h00
    06
    Nov. 2025
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    Séminaire Géométrie Topologie Dynamique
    Sami Douba
    Universität Bonn
    14h00 - 15h00
    13
    Nov. 2025
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    Séminaire Probabilités et Statistiques
    Claire Vernade
    University of Tübingen
    14h00 - 15h00
    13
    Nov. 2025
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    Séminaire Analyse Numérique et EDP
    TBA
    Thomas Perrin
    ENS Rennes
    14h00 - 15h00
    17
    Nov. 2025
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    GT Groupes
    Cyril Houdayer
    ENS
    14h00 - 15h00
    18
    Nov. 2025
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    GT des doctorants ANH et ANEDP
    TBA
    Ludovic Souêtre
    LJLL
    10h30 - 11h30
    18
    Nov. 2025
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    Séminaire Analyse Harmonique
    TBA
    Damian Dabrowski
    Institute of Mathematics of the Polish Academy of Sciences
    14h00 - 15h00
    19
    Nov. 2025
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    Séminaire des doctorants
    Arthur Yax
    14h00 - 15h00
    19
    Nov. 2025
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    Séminaire Datashape
    TBA
    Gillian Grindstaff
    University of Oxford
    11h00 - 12h00
    20
    Nov. 2025
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    Séminaire Probabilités et Statistiques
    François Bachoc
    Univ. Lille
    14h00 - 15h00
    20
    Nov. 2025
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    Séminaire Géométrie Topologie Dynamique
    Pegah Pournajafi
    Collège de France
    14h00 - 15h00
    20
    Nov. 2025
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    Séminaire Analyse Numérique et EDP
    TBA
    Martin Oen Paulsen
    Université de Bordeaux
    25
    Nov. 2025
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    GT des doctorants ANH et ANEDP
    TBA
    Adrien Cances
    LMO
    10h30 - 11h30
    25
    Nov. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    Anne Lonjou
    LMO
    14h00 - 15h00
    26
    Nov. 2025
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    Séminaire Datashape
    TBA
    Elodie Maignant
    Zuse Institute Berlin
    11h00 - 12h00
    27
    Nov. 2025
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    Séminaire Analyse Numérique et EDP
    TBA
    Laurent Michel
    Université de Bordeaux
    14h00 - 15h00
    27
    Nov. 2025
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    Séminaire Géométrie Topologie Dynamique
    Pierre Godfard
    University of North Carolina at Chapell Hill
    14h00 - 15h00
    01
    Dec. 2025
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    GT Groupes
    Alonso Beaumont
    Université de Rennes
    14h00 - 15h00
    02
    Dec. 2025
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    GT des doctorants ANH et ANEDP
    TBA
    Quentin Giton
    LMO
    10h30 - 11h30
    02
    Dec. 2025
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    Séminaire Analyse Harmonique
    TBA
    David Tewodrose
    Department of Mathematics and Data Science, Vrije Universiteit Brussel (Belgium).
    14h00 - 15h00
    02
    Dec. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    João Lourenço
    Université Sorbonne Paris Nord
    14h00 - 15h00
    03
    Dec. 2025
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    Séminaire des doctorants
    Alice Cousaert
    14h00 - 15h00
    04
    Dec. 2025
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    Séminaire Géométrie Topologie Dynamique
    François Bacher
    Institut de Mathématiques de Bourgogne
    14h00 - 15h00
    09
    Dec. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    TBA
    Alexander Kuznetsov
    Steklov Mathematical Institute
    14h00 - 15h00
    11
    Dec. 2025
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    Séminaire Géométrie Topologie Dynamique
    Magali Jay
    Max Planck Institute for Mathematics
    14h00 - 15h00
    16
    Dec. 2025
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    Séminaire Arithmétique et Géométrie Algébrique
    John Lesieutre
    Pennsylvania State University
    14h00 - 15h00
    16
    Dec. 2025
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    Séminaire Analyse Harmonique
    Xavier Tolsa
    Departament de Matemàtiques, Universitat Autonoma de Barcelona
    14h00 - 15h00
    18
    Dec. 2025
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    Séminaire Géométrie Topologie Dynamique
    Oussama Bensaid
    UC Louvain
    14h00 - 15h00
    15
    Jan. 2026
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    Séminaire Géométrie Topologie Dynamique
    Nicolas Vaskou
    Université de Genève
    14h00 - 15h00
    20
    Jan. 2026
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    Séminaire Analyse Harmonique
    TBA
    Isabelle Chalendar
    LAMA, Université Gustave Eiffel.
    14h00 - 15h00

    Team Lunch. The team meets once a week at 11:45am in the parking lot of building 307 for a joint departure to the CESFO restaurant. Upcoming dates (2025–2026):
    Monday, September 1;  Tuesday, September 9;  Wednesday, September 17;  Thursday, September 25;  Monday, October 6;  Tuesday, October 14;  Wednesday, October 22;  Thursday, October 30;  Friday, November 7;  Monday, November 17;  Tuesday, November 25;  Wednesday, December 3;  Thursday, December 11;  Friday, December 19;  Monday, January 5;  Tuesday, January 13;  Wednesday, January 21;  Thursday, January 29;  Friday, February 6;  Monday, February 16;  Tuesday, February 24;  Wednesday, March 4;  Thursday, March 12;  Friday, March 20;  Monday, March 30;  Tuesday, April 7;  Wednesday, April 15;  Thursday, April 23;  Monday, May 4;  Tuesday, May 12;  Wednesday, May 20;  Thursday, May 28;  Friday, June 5;  Monday, June 15;  Tuesday, June 23;  Wednesday, July 1.