Laurent C. Siebenmann

Carl Laurent Siebenmann (sometimes cited as Laurence Siebenmann, born 1939 in Toronto ) is a Canadian- French mathematician who deals with topology.

Siebenmann in 1965 received his doctorate from Princeton University with John Milnor (The Obstruction to Finding a boundary for in Open Manifolds of Dimension Greater than Five). He is a professor at the University of Paris-Sud in Orsay.

Seven man is known for his work in the early 1970s with Robion Kirby on classification and identification of obstructions for PL - structures on topological manifolds.

He is a Fellow of the American Mathematical Society.

Writings

• Kirby, Siebenmann: Foundational Essays on Topological Manifolds, Smoothing Hing, and triangulation. Annals of Mathematical Studies, Princeton 1977, pdf - file.
• Kirby, Siebenmann: On the triangulation of manifolds and the main conjecture. Bull Amer. Math Soc. 75 1969 742-749. ( Obstructions for Triangulierbarkeit and isotopies between triangulations )
• Siebenmann: Topological manifolds. Actes du Congrès International des Mathématiciens (Nice, 1970), Tome 2, pp. 133-163. Gauthier -Villars, Paris, 1971.
• Siebenmann: Approximating cellular maps by homeomorphisms. Topology 11 (1972 ), 271-294.
• Siebenmann: Deformation of homeomorphisms on stratified sets. I, II, Comment. Math Helv 47 (1972 ), 123-136; ibid. 47 (1972 ), 137-163.
• Bonahon, Siebenmann: The characteristic toric splitting of irreducible compact 3 - orbifolds. Math Ann. 278 (1987), no 1-4, 441-479. ( JSJ - decomposition for orbifolds )