Curriculum Vitae

Curriculum Vitae


  • PhD:University of Paris-Sud, February 1994; PhD advisor: Valentin Poenaru.
  • MS: University of Bucharest, 1990.
  • BA: College Carol I, Craiova, 1985.
    Professional history:

  • 1994-present: Researcher, Institute Fourier, Grenoble.
  • 1999-2000: Visiting Associate Professor, Tokyo Institute of Technology.
  • 1993-1994: Instructor (ATER), University Paris-Sud.
  • 1990-1994: Junior Researcher, Institute of Mathematics of the Romanian Academy, Bucharest.
    Some publications:

  • Automorphisms of procongruence curve and pants complexes (with Marco Boggi), J. Topology 16 (2023), 936-989.
  • Profinite completions of Burnside-type surface groups (with Pierre Lochak), Commun. Math. Phys. 360(2018), 1061-1082.
  • Diffeomorphisms groups of tame Cantor sets and Thompson-like groups (with Yury Neretin), Compositio Math. 154 (2018), 1066-1110.
  • Centrally extended mapping class groups from quantum Teichmuller theory (with Rinat Kashaev) Advances Math. 252 (2014), 260-291.
  • Torus bundles not distinguished by TQFT invariants, with an Appendix joint with Andrei Rapinchuk, Geom. Topol. 17(2013), 2289-2344.
  • The first Johnson subgroups act ergodically on SU(2) character varieties (with Julien Marche) J. Diff. Geometry 95(2013), 407-418.
  • Global classification of isolated singularities in dimensions (4,3) and (8,5), Ann. Scuola Norm. Sup. Pisa Cl. Sci., vol X (2011), 819-861.
  • Central extensions of the Ptolemy-Thompson group and quantized Teichmuller theory (with Vlad Sergiescu) J.Topology 3(2010), 29-62.

  • PhD former and present Students:

  • Paolo Bellingeri (co-directed by Vlad Sergiescu): Braids on surfaces and link invariants, 2003.
  • Daniele Otera (co-directed by Valentin Poenaru): Asymptotic invariants of discrete groups, 2006.
  • Maxime Wolff : On the exotic components of the space of surface groups actions on the hyperbolic plane, 2007.
  • Frederic Palesi: Dynamics on representations spaces for non-orientable surfaces, 2009.
  • Ariadna Fossas (co-directed by Jose Burillo): Geometric and combinatorial aspects of Thompson's group T, 2012.
  • Maxime Nguyen: Mapping class groups and automorphisms of complexes of surfaces of infinite type, 2012.
  • Taciana Oliviera Souza (co-directed by Denise de Mattos): (H,G)-coincidence theorems for manifolds and global classification of isolated singularities in dimensions (6,3), Univ Sao Carlos, Brazil, 2013.
  • Julien Korinman: On quantum representations of mapping class groups, 2014.
  • Binbin Xu (co-directed by Greg McShane) : Hyperbolic Pleijel identities and quantum Teichmuller spaces, 2014.
  • Pablo Gonzalez Pagotto: On the cosets monoid of the infinite braid group, 2019.
  • Clement Berat: Geometry of representation varieties in solvable Lie groups and 3-dimensional geometry, 2021.
  • Fayssal Saadi (co-directed by Erwan Lanneau and Ghani Zeghib): Dynamics on moduli spaces
  • Yibo Zhang (co-directed by Greg McShane): Manifolds of dimension four admitting surface fibrations, 2024.
  • Sardor Yakupov