Corentin Le Bars

I am a postdoctoral fellow in the Weizmann Institute of Science, under the supervision of Prof. Uri Bader. I work in geometric group theory, with a focus on boundary and rigidity theory, random walks and limit laws, hyperbolic and CAT(0) spaces, buildings and their boundaries. You can find my CV here.

Contact: corentin.le-bars (at) weizmann.ac.il

Address: Goldsmith Building, Office 109, Weizmann Institute of Science, Faculty of Mathematics and Computer Sciences

Papers and Prepublications

  • Strongly regular elements and a Tits alternative in non-discrete buildings of type \tilde{A}_2, with J. Lécureux and J. Schillewaert, in preparation (2024)
  • Stationary measures and random walks on buildings of type \tilde{A}_2, in preparation (2024)
  • A Central Limit Theorem on CAT(0) spaces with contracting isometries, arXiv:2209.11648 (2022)
  • Random walks and rank one isometries on CAT(0) spaces, arXiv:2205.07594 (2022)

PhD Thesis

  • Marches aléatoires et éléments contractants sur des espaces CAT(0), Thèse dirigée par Jean Lécureux, Université Paris-Saclay, 2023UPASM017, 2023

Conferences and Seminar talks

International conferences

  • Young Geometric Group Theory Münster XI, lightning talk (February 2022)
  • “Paroles aux jeunes chercheuses et chercheurs en géométrie et dynamique”, lightning talk, Laboratoire de Mathématiques d’Orsay (November 2022)
  • “Boundary theory, with applications on super-rigidity and random walks”, Mini-course at Institut Henri Poincaré, Groups acting on fractals, self-similarity and hyperbolicity (May 2022)
  • “Random walks onCAT(0) spaces with rank one isometries”, Kleebach meeting, ANR AGIRA project (September 2021)


Seminar talks

  • “Stationary measures on affine buildings of type \tilde{A}_2”, Geometry and topology seminar, Technion Israel Institute of Technology (April 2024)
  • “Random walks on affine buildings of type \tilde{A}_2”, Group theory midrasha, Weizmann Institute of Science (January 2024)
  • “Random walks on CAT(0) spaces with contracting elements”, Séminaire Théorie ergodique, IMAR, Rennes (2023)
  • “Limit laws for random walks in CAT(0) spaces with rank one isometries”, Laboratoire de Mathématiques d’Orsay (June 2022)
  • “Marches aléatoires et isométries de rang 1 dans les espaces CAT(0)”, Seminar Groups and Operator Algebras, Laboratoire de Mathématiques d’Orsay (February 2022)
  • “Coxeter groups”, PhD student workshop, Laboratoire de Mathématiques d’Orsay (October 2020)
  • “Poisson boundaries and entropy criteria”, PhD student workshop, Laboratoire de Mathématiques d’Orsay (April 2021)