Laurent C. Siebenmann
After working for several years as a Professor at Orsay he became a Directeur de Recherches in the French CNRS in 1976. He is a topologist who works on manifolds and who co-discovered the Kirby–Siebenmann class. His undergraduate studies were at the University of Toronto. He received a Ph.D. from Princeton University under the supervision of John Milnor in 1965 with the dissertation The Obstruction to Finding a Boundary for an Open Manifold of Dimension Greater than Five. His doctoral students at Orsay included Michel Boileau, Francis Bonahon, Albert Fathi, Lucien Guillou, Alexis Marin and Jean-Pierre Otal.
- Kirby, Robion C.; Siebenmann, Laurence C. (1977), Foundational Essays on Topological Manifolds, Smoothings, and Triangulations (PDF), Princeton, NJ: Princeton Univ. Pr., ISBN 0-691-08191-3
- "Jeffery-Williams Prize". cms.math.ca. Retrieved 2017-03-14.
- List of Fellows of the American Mathematical Society, retrieved 2013-07-20.