The workshop 'Groups in action : From representations and harmonic analysis on Lie groups to index theory' in honour of Michèle Vergne's 80th birthday, will take place from September 04th to 08th, 2023, at Université Paris Cité, in Paris.

The aim of this meeting, which celebrates Michele Vergne's 80th birthday, is to bring together mathematicians working at the interface of harmonic analysis, representation theory and index theory, with group actions as a leading thread throughout the conference. We expect that the different areas of expertise and the different views on these topics will lead to a fruitful exchange on current research topics.

The meeting will be organised around the following topics :

• Group representations
• Index theory, geometric quantisation,
• Moduli spaces, symplectic geometry, mathematical physics,
• Polytopes, optimisation and P=NP.

Speakers :

• Anton Alekseev (Université de Genève)
• Alexander Barvinok (University of Michigan)
• Jean-Michel Bismut (Université Paris Saclay)
• Jesus De Loera (University of California, Davis)
• Benjamin Enriquez (Université de Strasbourg)
• Giovanni Felder (ETH Zurich)
• Ezra Getzler (Northwestern University)
• Pascale Harinck (Ecole Polytechnique)
• Louis Ioos (Université Cergy Pontoise)
• Frances Kirwan (University of Oxford)
• Karola Mészáros (Cornell University)
• Eckhard Meinrenken (University of Toronto)
• Eva Miranda (UPC Barcelona)
• Angela Pasquale (Université de Lorraine)
• Nicolas Ressayre (Université Lyon 1)
• Andras Szenes (Université de Genève)
• Eric Vasserot (Université Paris Cité)
• Michael Walter (Ruhr University Bochum)
• Hang Wang (East China Normal University)
• Weiping Zhang (Chern Institute of Math)

Organizers : Xiaonan Ma (Université Paris Cité), Paul-Émile Paradan (Université de Montpellier), Sylvie Paycha (Potsdam University)

Registration deadline : May 15th, 2023 https://potsdamconference2023.math.uni-potsdam.de/michelevergne/sendmail/register.html

More information : https://webusers.imj-prg.fr/~xiaonan.ma/Vergne80/page_web_MV2023/TitreMV2023.html