Simon ANDRÉ


Version française

I am an associate professor (maître de conférences) at the IMJ-PRG (Institute of Mathematics of Jussieu - Paris Rive Gauche) of Sorbonne University, in the Complex analysis and Geometry group, since September 2023.

I was previously a postdoc at the University of Münster in Germany from September 2021 to August 2023, and I was a postdoc at Vanderbilt University in Nashville USA, from August 2019 to August 2021.

I did my graduate studies at the Institute of Mathematics of Rennes (IRMAR) in France, under the supervision of Vincent Guirardel, from September 2016 to July 2019.

Address

Office 16-26-529
Institut de mathématiques de Jussieu - Paris Rive Gauche
Sorbonne Université - Campus Pierre et Marie Curie
4 place Jussieu, boîte courrier 247
75252 Paris Cedex 5
France
simon.andre arobase imj-prg.fr

Research interests

Geometric group theory (in particular hyperbolic groups in the sense of Gromov and their generalizations), Model theory.

Preprints

  1. Non-split sharply 2- and 3-transitive groups in SL(n,Z), with Marco Amelio, [arXiv].

  2. Homogeneity in Coxeter groups and split crystallographic groups, with Gianluca Paolini, [arXiv].

  3. Around first-order rigidity of Coxeter groups, with Gianluca Paolini, [arXiv].

  4. On the Tarski problem for all hyperbolic groups, [pdf] (preliminary version).

  5. On Tarski's problem for virtually free groups, [arXiv].

Accepted papers

  1. Non-split sharply 2-transitive groups of odd positive characteristic, with Marco Amelio and Katrin Tent, [arXiv]
    2. International Mathematics Research Notices 19 (2025).

  2. Finitely generated simple sharply 2-transitive groups, with Vincent Guirardel, [arXiv]
    3. Compositio Mathematica 160-8 (2024), 1941-1957.

  3. Co-Hopfian virtually free groups and elementary equivalence, [arXiv]
    4. Bulletin of the London Mathematical Society 54-6 (2022), 2202-2218.

  4. Simple sharply 2-transitive groups, with Katrin Tent, [arXiv]
    5. Transactions of the American Mathematical Society 376 (2023), 3965-3993.

  5. Acylindrical hyperbolicity and existential closedness, [arXiv]
    6. Proceedings of the American Mathematical Society 150 (2022), 909-918.

  6. Formal solutions and the first-order theory of acylindrically hyperbolic groups, with Jonathan Fruchter, [arXiv]
    7. Journal of the London Mathematical Society 105-2 (2022), 1012-1072.

  7. Elementary subgroups of virtually free groups, [arXiv]
    8. Groups, Geometry and Dynamics 15 (2021), 1523-1552.

  8. Homogeneity in virtually free groups, [arXiv]
    9. Israel Journal of Mathematics 249 (2022), 167-225.

  9. Hyperbolicity and cubulability are preserved under elementary equivalence, [arXiv]
    10. Geometry & Topology 24-3 (2020), 1075-1147.

My PhD thesis

Talks in seminars or conferences

List of talks