Most of my recent preprints are available on the arXiv preprint server. Here is a direct link.

Here are a few things which are not available on arXiv.

  • The hyperbolic revolution: from topology to geometry, and back, in A century of advancing mathematics (S. F. Kennedy, D. J. Albers, G. L. Alexanderson, D. Dumbaugh, F. A. Farris, D. B. Haunsperger and P. Zorn eds.), 3–13, Math. Assoc. America, Washington, DC, 2015. PDF file (340K)
  • New Geometric Splittings of Classical Knots, and the Classification and Symmetries of Arborescent Knots, with Larry Siebenmann. This is the revised version of a famous unpublished manuscript, about 300 pages in its current form. After 30+ years, it may be published as a book reasonably soon (stay tuned!).  PDF file (6 MB)
  • Closed curves on surfaces, monograph theoretically in preparation, although it hasn’t moved much in recent years.This is still in a very incomplete and unpolished state.  PDF file   (4 MB)
  • Involutions et fibrés de Seifert dans les variétés de dimension 3. This is a scanned copy of my Thèse de Troisième Cycle (1979), technically unpublished (although big parts of it appeared in more general form in the monograph and articles that I have written with Larry Siebenmann). I put it here for historical purposes; note the nice handwriting. PDF file (5.3 MB)

Older stuff:

  • Geometric Structures on 3-manifolds, appeared in the Handbook of Geometric Topology (R. Daverman, R. Sher eds.), Elsevier, 2002, pp. 93-164.  PDF File   (760K)
  • Geodesic laminations on surfaces, survey article which appeared in:  Laminations and Foliations in Dynamics, Geometry and Topology (M, Lyubich, J. Milnor, Y. Minsky eds.), Contemporary Mathematics vol. 269, American Math. Society. PDF file   (450K)

Other item of possible interest:

  • Cent Mille Milliards de Poèmes by Raymond Queneau. This Plain TeX file has a very crude randomizer which can typeset a new poem every minute. Assuming that the randomizer does not create too many duplications and that you do not waste too much time with futile activities such as sleeping, this should enable you to read all the possible poems in a little over three million years. This definitely lacks the low tech charm of the original book version (Gallimard, 1961), which can be bought from many good sources, such as or .  TeX file   (380K)