Simon ANDRÉ

Version française

I am an associate professor (maître de conférences) at the Institute of Mathematics of Jussieu - Paris Rive Gauche (IMJ-PRG) of Sorbonne University, in the team "complex analysis and geometry", 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

My research concerns geometric group theory and model theory. I am particularly interested in hyperbolic groups in the sense of Gromov and their generalizations (such as acylindrically hyperbolic groups), and their logical properties. More recently, I have started working on multiply transitive group actions.

Preprints

Non-split sharply 2-transitive groups of odd positive characteristic, with Marco Amelio and Katrin Tent, arXiv.
On the Tarski problem for all hyperbolic groups, pdf (preliminary version).
On Tarski's problem for virtually free groups, arXiv.

Published and accepted papers

Finitely generated simple sharply 2-transitive groups, avec Vincent Guirardel, arXiv

Compositio Mathematica

Co-Hopfian virtually free groups and elementary equivalence, arXiv and journal

Bulletin of the London Mathematical Society

Simple sharply 2-transitive groups, with Katrin Tent, arXiv and journal

Transactions of the American Mathematical Society

Acylindrical hyperbolicity and existential closedness, arXiv and journal

Proceedings of the American Mathematical Society

Formal solutions and the first-order theory of acylindrically hyperbolic groups, with Jonathan Fruchter, arXiv and journal

Journal of the London Mathematical Society

Elementary subgroups of virtually free groups, arXiv and journal

Groups, Geometry and Dynamics

Homogeneity in virtually free groups, arXiv and journal

Israel Journal of Mathematics

Hyperbolicity and cubulability are preserved under elementary equivalence, arXiv and journal

Geometry & Topology

My PhD thesis

Thesis (pdf) With an introduction in French.

Talks in seminars or conferences

Conference « Logique à Paris 2024 », 29 February - 2 March 2024.
IMJ-PRG (Sophie Germain), Model Theory and Group Theory seminar, 30 January 2024.
IMJ-PRG (Sophie Germain), Operator Algebra seminar, 14 December 2023.
IMJ-PRG (Sophie Germain), Model Theory and Group Theory seminar, 28 November 2023.
IMJ-PRG (Sophie Germain), Logic seminar, 20 November 2023.
ENS Ulm, Group Theory seminar, 15 November 2023.
Mathematical Institute of Orsay, Groups and Actions seminar, 16 October 2023.
IMJ-PRG (Jussieu), Geometry and Topology seminar, 12 October 2023.
Münster University (Germany), « Model Theory and Groups - A conference on the occasion of Katrin Tent's 60th birthday », 25-29 September 2023.
Mathematical Institute of Poitiers, Groups, Algebra and Geometry seminar, 30 March 2023.
Mathematical Institute of Marseille, Rauzy seminar, 10 February 2023.
Laboratoire Paul Painlevé (Lille), Geometry and Dynamics seminar, 3 February 2023.
Mathematical Institute of Bordeaux, Geometry seminar, 27 January 2023.
Oberwolfach, conférence « Model Theory: Combinatorics, Groups, Valued Fields and Neostability », 13 January 2023.
UMPA ENS de Lyon, Geometry, Groups and Dynamics seminar, 9 November 2022.
Institut Grothendieck (Montpellier), séminaire Darboux, 21 October 2022.
Institut Henri Poincaré (Paris), conference « Hyperbolic groups and their generalisations », June 2022.
Conference Münster-Düsseldorf GeSAMT, 11 June 2022.
Universität Münster, Oberseminar Modelltheorie, Geometrie und Gruppentheorie, 5 May 2022.
Laboratoire Blaise Pascal (Clermont-Ferrand), Geometry, Algebra and Operator algebra seminar, 18 February 2022.
IRMAR (Rennes), Ergodic theory seminar, 3 January 2022 (online).
Institut Camille Jordan (Lyon), Mathematical logic seminar, 16 December 2021.
Universität Münster, Geometric group theory seminar, 25 November 2021.
Universität Münster, Oberseminar Modelltheorie, Geometrie und Gruppentheorie, 28 October 2021.
Universidad del País Vasco (Bilbao), Algebra seminar, 26 May 2021 (online).
Murray State University, conference « The 54th Spring Topology and Dynamical Systems Conference », May 2021 (online).
Mathematical Institute of Orsay, Geometry, Topology and Dynamics seminar, January 2021 (online).
Laboratoire Nicolas Oresme (Caen), Algebra and Geometry seminar, 12 January 2021 (online).
Séminaire virtuel francophone de groupes et géométrie, 17 December 2020 (online).
Universität Wien (Vienne), Geometry and Analysis on Groups Research Seminar, 1 December 2020 (online).
Séminaire de logique Lyon-Paris, November 2020 (online).
ICMS (Edinburgh), conference « Mini GAGTA », June 2020 (online).
Purdue University, conference « AMS Meeting: Special Session on Group Theory and Logic », April 2020 (cancelled).
Institut Fourier (Grenoble), Topology seminar, 14 February 2020 (online).
Oberwolfach, conference « Model Theory: Groups, Geometries and Combinatorics », January 2020.
Vanderbilt University (Nashville), Topology & Group Theory Seminar, 18 September 2019.
ENS Ulm, Group theory seminar, 12 March 2019.
Jussieu, Model theory and Groups seminar, 18 December 2018.
Institut Camille Jordan (Lyon), conference « Parole aux jeunes chercheurs 2018 : groupes et géométrie », November 2018.
Laboratoire Nicolas Oresme (Caen), Algebra and Geometry seminar, 6 November 2018.
Universidad del País Vasco (Bilbao), Algebra seminar, 9 October 2018.
Hausdorff Research Institute for Mathematics (Bonn), « International Workshop on Logic and Algorithms in Group Theory », September 2018.
IRMAR (Rennes), young researchers seminar, 31 May 2018.
Mathematical Institute of Orsay, Groups, Actions and Von Neumann algebras seminar, 4 June 2018.
Laboratoire Jean Leray (Nantes), young researchers seminar, 22 January 2018.
IRMAR (Rennes), Ergodic theory seminar, 18 December 2017.
IRMAR (Rennes), young researchers seminar, 20 October 2016.