Preprints

  • (with Toshitake Kohno) On Burau representations at roots of unity, 18p., actual version of arXiv:0907.0568, Nov 2011. (gz) (pdf)
  • On power subgroups of mapping class groups, 15p., arXiv:0910.1493, July 2011. (gz) (pdf)
  • (with Rinat Kashaev) Centrally extended mapping class groups from quantum Teichmuller theory, 23p., arXiv:1003.5365, March 2010. (gz) (pdf)
  • Torus bundles not distinguished by TQFT invariants, 26p., arxiv:1101.0509.(gz) (pdf)
  • (with Wolfgang Pitsch) Finite quotients of symplectic groups vs mapping class groups, 19p., arxiv:1103.1855. (gz) (pdf)
  • Zariski density and finite quotients of mapping class groups, 13p., arxiv:1106.4165, Sept 2011.(gz) (pdf)
  • (with Wolfgang Pitsch) Dupont-Guichardet-Wigner quasi-homomorphisms on mapping class groups, Preliminary version, 22p., Jan 2012. (pdf)

    • Selected publications

  • Cubulations, immersions, mappability and a problem of Habegger, Ann.Sci.E.N.S., 32(1999), 681-700. (gz)
  • (with Rosa Gini) The graded cobordism group of codimension one immersions, G.A.F.A. 12(2002), 1235-1264. (gz) (pdf)
  • (with Siddhartha Gadgil) On the geometric simple connectivity of open manifolds, I.M.R.N., no.24, 2004, 1193-1248. (gz) (pdf)
  • (with Christophe Kapoudjian) On a universal mapping class group of genus zero, G.A.F.A. 14(2004), 965-1012.(gz) (pdf)
  • (with Christophe Kapoudjian) The braided Ptolemy-Thompson group is finitely presented, Geom.Topol. 12(2008), 475-530. (gz) (pdf)
  • (with Christophe Kapoudjian) An infinite genus mapping class group and stable cohomology, Commun. Math. Phys. 287(2009), 787-804. (gz) (pdf)
  • (with Vlad Sergiescu) Central extensions of the Ptolemy-Thompson group and quantized Teichmuller theory, J.Topology 3(2010), 29-62. (pdf)
  • (with Daniele Otera) On the wgsc and qsf tameness conditions for finitely presented groups, Groups Geometry and Dynamics 4(2010), 549-596. (gz) (pdf)
  • (with Christophe Kapoudjian) The braided Ptolemy-Thompson group T* is asynchronously combable, Comment. Math. Helv. 86(2011), 707-768. (gz) (pdf)
  • Global classification of isolated singularities in dimensions (4,3) and (8,5), Ann. Scuola Norm. Sup. Pisa Cl. Sci., vol X (2011), 819-861. (gz) (pdf)

    • Online papers

  • On the TQFT representations of the mapping class groups, Pacific J. Math. 188(1999), 251-274. (gz)(pdf)
  • (with Razvan Gelca) On the groupoid of transformations of rigid structures on surfaces, J.Math.Sci.Univ.Tokyo, 6(1999), 599-646.(gz)(pdf)
  • On some abelian invariants for 3-manifolds, Revue Roumaine Math.Pures Appl., 45(2000), 825-861. (gz)(pdf)
  • (with Siddhartha Gadgil) Topological geodesics and virtual rigidity, Algebraic & Geometric Topology, 1(2001), 369-380. (gz)(pdf)
  • (with Daniele Otera) A refinement of the simple connectivity at infinity of groups, Archiv Math. (Basel) 81(2003), 360-368.(gz) (pdf)
  • (with Paolo Bellingeri) Braids on surfaces and finite type invariants, C.R.Acad.Sci.Paris, 338(2004), 157-162. (gz) (pdf)
  • (with Renata Grimaldi) The ends of manifolds of bounded geometry, linear growth and finite filling area, Geometriae Dedicata, 104(2004), 139-148.(gz) (pdf)
  • (with Paolo Bellingeri) Polynomial invariants of links satisfying cubic skein relations, Asian J. Math. 8(2004), 475-510. (gz) (pdf) Errata (pdf)
  • (with Dorin Andrica) On smooth maps with finitely many critical points, J. London Math.Soc. 69(2004), 783-800. (gz)(pdf)
  • (with Dorin Andrica) Addendum to: "On smooth maps with finitely many critical points", J. London Math.Soc. 73(2006), 231-236. (gz)(pdf)
  • (with Maxime Wolff) Non-injective representations of a closed surface group into PSL(2,R), Math.Proc. Cambridge Phil.Soc. 142(2007), 289-304. (gz) (pdf)
  • Ptolemy groupoids actions on Teichmuller spaces, Modern Trends in Geometry and Topology, Deva, Romania 2005, (D.Andrica, P.Blaga, S.Moroianu, Eds.), Cluj Univ.Press 2006, p.185-201. (gz) (pdf)
  • Surface cubications mod flips, Manuscripta Math. 125(2008), 285-307.(gz) (pdf)
  • Braided Houghton groups as mapping class groups, Annales Sci. Univ. "A.I.Cuza" Jassy, special vol. to the memory of Gh.Ionesei, 53(2007), 229-240. (gz) (pdf)
  • (with Dorin Andrica and Elena Kudryavtseva) The minimal number of critical points of maps between closed manifolds, Russian Journal of Mathematical Physics, special issue for the Conference celebrating the 60-th birthday of Nicolae Teleman (Ancona and Porto Nuovo, September, 2007), J.-P. Brasselet, A. Legrand, R. Longo, A. Mishchenko, Editors, 16(2009), 363-370. (gz) (pdf)
  • (with Cornel Pintea and Ping Zhang) Examples of smooth maps with finitely many critical points in dimensions (4,3), (8,5) and (16,9), Proc. Amer. Math. Soc. 138(2010), 355-365. (gz) (pdf)
  • (with Valentin Boju) Asymptotics of generalized Hadwiger numbers, Studia Sci. Math. Hungarica 48(2011), 44-74. (gz) (pdf)
  • Two questions on mapping class groups, Proc.Amer.Math.Soc. 139(2011), 375-382. (gz) (pdf) Errata (pdf)
  • (with Francisco Lasheras and Dusan Repovs) Groups which are not properly 3-realizable, Revista Matematica Iberoamericana, to appear. (gz) (pdf) long version, math.GT/0709.1576, (gz) (pdf)
  • (with Christophe Kapoudjian and Vlad Sergiescu) Asymptotically rigid mapping class groups and Thompson groups, Handbook of Teichmuller theory vol IV (Editor A.Papadopoulos), 77p., arXiv:1105.0559. (gz) (pdf)
  • (with Toshitake Kohno) Free subgroups within the images of quantum representations, Forum Math., to appear, 14p., arxiv:1108.4904, Sept 2011. (gz) (pdf)

    • Book

  • (with Valentin Boju) The math problems notebook, Birkhauser Boston, 236 p., 2007.
  • Errata (pdf)

    • Online lectures (graduate courses, surveys)

  • Introduction to quantum invariants of knots, Graduate course 1998-1999, Institut Fourier, 59p. (gz)
  • On knots having the same invariants up to a certain degree, notes for the Summer School " Invariants de noeuds et de varietes de dimension 3", Institut Fourier 1999, 5p., Jul 1999. (gz)
  • Lectures on Fuchsian groups and their moduli, notes for the Summer School "Geometries a courbure negative ou nulle, groupes discrets et rigidites", Institut Fourier 2004, 34p., Aug 2004. (gz)
    • Click on gz in order to retrieve the gzipped postscript file.