Articles and preprints

  • Orbit equivalence and the asymptotic growth of the number of sofic approximations (with Ken Dykema and David Kerr)
    Preprint. [pdf]

  • Random groups of intermediate rank
    Oberwolfach reports, Vol. 7 (2010). [pdf]

  • Closed manifolds with transcendental L2-Betti numbers (with Thomas Schick and Andrzej Zuk)
    Preprint. [pdf]

  • Random groups and nonarchimedean lattices (with Sylvain Barré)
    Preprint. [pdf]

  • Property RD for D. Wise's non Hopfian group (with Sylvain Barré)
    Preprint. [pdf]

  • Intermediate rank and property RD (with Sylvain Barré)
    Preprint. [pdf]

  • The cost is an isoperimetric invariant (with Stéphane Vassout)
    J. Noncommut. Geom., Vol. 4 (2010), 381--387. [pdf]

  • The 4-string braid group B4 has property RD and exponential mesoscopic rank (with Sylvain Barré)
    Bull. Soc. Math. France, to appear. [pdf]

  • Existence d'immeubles triangulaires quasi-périodiques (with Sylvain Barré)
    Math. Ann., to appear. [pdf]

  • Turbulence, representations, and trace-preserving actions (with David Kerr and Hanfeng Li)
    Proc. Lond. Math. Soc. (3) 100, No. 2, 459-484 (2010). [pdf]

  • The space of triangle buildings
    Adv. Stud. Pure Math. 55, IHES-MSJ 2006, pp. 321-334 (2009). [pdf]

  • A note on Markov type constants (with Shin-ichi Ohta)
    Arch. Math. (Basel), 92 (2009), pp 80--88. [pdf]

  • Harmonic analysis from quasi-periodic domains
    Israel J. Math, 167 (2008), pp 63--90. [pdf]

  • Uniform non amenability, cost, and the first L2 Betti number (with Russell Lyons and Stéphane Vassout)
    Groups Geom. Dyn., Vol. 2, no. 4 (2008), 595--617. [pdf]

  • Groups of intermediate rank: two examples
    Oberwolfach reports, Vol. 5 (2008). [pdf]

  • Asymptotic Abelianness, weak mixing, and property T (with David Kerr)
    J. Reine Angew. Math., 623 (2008), 213--235. [pdf]

  • Sur les immeubles triangulaires et leurs automorphismes (with Sylvain Barré)
    Geom. Dedicata 130 (2007), 71--91.

  • Sur la théorie spectrale des relations d'équivalence mesurées
    J. Inst. Math. Jussieu, Vol. 6, no. 03 (2007), pp 453-500.

  • Sur les espaces mesurés singuliers fortement ergodiques et leurs structures métriques-mesurées
    Ann. Inst. Fourier, 57, no. 1 (2007), p. 1-43.

  • Semi-continuity of the first L2 Betti number on the space of finitely generated groups
    Comment. Math. Helv. 81 (2006), no. 3, 643--652.

  • Conditions simpliciales de rigidité pour les relations d'équivalence de type II1
    C. R. Math. Acad. Sci. Paris 337 (2003), no. 1, 7--12.

  • Quasi-périodicité et théorie de la mesure
    Ph. D. Thesis (2005). [pdf]