Atelier on higher structures in differential geometry

December 07 - 09, 2022
Institut Camille Jordan, Université Claude-Bernard Lyon 1

The goal of the event is bringing together researchers at the intersection of differential geometry and higher structures and discuss interesting mathematics in an informal atmosphere.

Talks will be primarily by junior researchers. Speakers are encouraged to make talks accessible to a broader audience. Survey/ introductory talks to interesting topics are welcome.

Schedule :

(also available here as the event poster)

  • Wednesday morning (room 112):
    • 9:00 - 9:45: Miquel CUECA (Göttingen), Shifted symplectic structures
    • 10:00 - 10:45:: David KERN (Göttingen), Reduction of graded manifolds in low degrees
    • 11:00 - 11:45: Annika TARNOWSKY (MPIM Bonn), Models for differentiable stack cohomology
    • 12:45 Lunch
  • Wednesday afternoon:
    • free dicussions
  • Thursday morning (room 108):
    • 9:00 - 9:45: Ilias ERMEIDIS (Göttingen), About deformations of foliations on Lie algebroids
    • 10:00 - 10:45:: Hadi NAHARI (Lyon 1), Singular Riemannian foliations
    • 11:00 - 11:45: Ruben LOUIS (Lorraine), On symmetries of singular foliations
    • 12:30 Lunch
  • Thursday afternoon (room Amphi Jordan):
    • 14:00 - 14:45: Francesco CATTAFI (Würzburg), Multiplicative Haefliger foliations
    • 15:00 - 15:45:Lory KADIYAN (MPIM Bonn), Higher Lie algebroids as ends in tangent categories
    • 16:30 - 17:15: Hao XU (Göttingen), Higher Representation Theory Done with an Example
    • 17:30 - 18:15:Oscar COSSERAT (La Rochelle), Hamiltonian systems and multiplicative groupoids
  • Friday morning (room 112):
    • 9:00 - 9:45: Stefano RONCHI (Würzburg), Higher Cotangent Groupoids
    • 10:00 - 10:45::Aliaksandr HANCHARUK (Lyon 1), Koszul-Tate resolution and decorated trees
    • 11:00 - 11:45: Karandeep SINGH (Leuven), Differential graded Lie algebras and stability problems
    • 12:30 Lunch
  • On Friday afternoon (14:00, room 108) there is a talk by Antonio MITI (MPIM Bonn) in the mathematical physics seminar of Lyon.


Registration is now closed, In case you would like to attend the talks, please email Leonid Ryvkin (

External participants: Please note that this is an essentially zero-budget event, so please assure accommodation and transportation by yourself. Also, please keep in mind that during the event there is the "festival de Lumiere" in Lyon, which might attract tourists and make the hotel situation more complicated.

The event will be held in whatever the Covid rules will be in France (and the university of Lyon) in December. This might be "no rules", or "vaccination or test certification" or (improbably) lockdown and cancellation/ online-ization of the event. Hence it might be advisable to book your trips in "refundable" ways.


The event will take place in various rooms in the first floor of the Braconnier building, 21 avenue Claude BERNARD in 69100 Lyon. It is reachable directly by Tram 1 or 4, the name of the station is Université Lyon 1. ( Map )


Organized by:
  • Leonid Ryvkin, Université Claude-Bernard Lyon 1 (local organizer)
  • Vladimir Salnikov, Université de La Rochelle,
  • Chenchang Zhu, University of Göttingen,

In case of questions please contact Leonid Ryvkin (

This event is supported by the GraNum project funded by the German academic exchange agency (DAAD) and Campus France, the Équipe PSPM and the ICJ at the university of Lyon 1.

Background image by Anna Marklova, website template by Start Bootstrap LLC.