André Haefliger
André Haefliger | |
---|---|
Born | |
Nationality | Swiss |
Alma mater | University of Lausanne University of Strasbourg |
Scientific career | |
Fields | Mathematics |
Institutions | University of Geneva |
Thesis | Structures feuilletées et cohomologie à valeurs dans un faisceau de groupoides (1958) |
Doctoral advisor | Charles Ehresmann |
Doctoral students | Augustin Banyaga Vaughan Jones |
André Haefliger (born 22 May 1929 in Nyon, Switzerland) is a Swiss mathematician who works primarily on topology.
He studied mathematics at the University of Lausanne. He received his Ph.D. degree in 1958 from the University of Strasbourg under the supervision of Charles Ehresmann with "Structures feuilletées et cohomologie à valeurs dans un faisceau de groupoïdes".[1]
From 1959 to 1961 he worked at the Institute for Advanced Study in Princeton, New Jersey.
Since 1962 he has been a full professor at the University of Geneva.
Haefliger made important contributions to topology, for example, in knot theory and the theory of foliations, where he introduced Haefliger structures. In 1956, he also found the topological obstruction to the existence of a spin structure on an orientable Riemannian manifold.[2]
In 1974–75, he was president of the Swiss Mathematical Society.
He was an honorary doctor of ETH Zurich (1992).
In 2020, for their book Metric Spaces of Non-Positive Curvature (Springer Verlag, 1999), Haefliger and Martin Bridson were awarded the American Mathematical Society's Leroy P. Steele Prize for Mathematical Exposition.
He had 20 Ph.D. students, including Vaughan Jones and Augustin Banyaga.[1]
Works[]
- "Un aperçu de l'oeuvre de Thom en topologie différentielle (jusqu'en 1957)" (PDF). Publications Mathématiques de l'IHÉS. 68: 13–18. 1988.
- "Travaux de Novikov sur les feuilletages." Séminaire Bourbaki 10 (1966-1968): 433-444.
- "Sur les classes caractéristiques des feuilletages." Séminaire Bourbaki 14 (1971-1972): 239-260.
- "Sphères d'homotopie nouées." Séminaire Bourbaki 9 (1964-1966): 57-68.
- "Feuilletages riemanniens." Séminaire Bourbaki 31 (1988-1989): 183-197.
- "Plongements de variétés dans le domaine stable." Séminaire Bourbaki 8 (1962-1964): 63-77.
- "Des espaces homogènes à la résolution de Koszul" (PDF). Annales de l'Institut Fourier. 37 (4): 5–13. 1987.
- "Variétés feuilletées" (PDF). Annali della Scuola Normale Superiore di Pisa - Classe di Scienze. 16 (4): 367–397. 1962.
- "Sur la cohomologie de l'algèbre de Lie des champs de vecteurs" (PDF). Annales Scientifiques de l'École Normale Supérieure. 9 (4): 503–532. 1976.
- "Extension of complexes of groups" (PDF). Annales de l'Institut Fourier. 42 (1–2): 275–311. 1992.
- "Quelques remarques sur les applications différentiables d'une surface dans le plan" (PDF). Annales de l'Institut Fourier. 10: 47–60. 1960.
- "Plongements différentiables de variétés dans variétés." Commentarii Mathematici Helvetici. 36: 47–82. 1961.
- "Structures feuilletées et cohomologie à valeur dans un faisceau de groupoides". Commentarii Mathematici Helvetici. 32: 248–329. 1957. (Ph.D. Thesis)
- "Plongements différentiables dans le domaine stable". Commentarii Mathematici Helvetici. 37: 155–176. 1962.
- "Enlacements de sphères en codimension supérieure à 2". Commentarii Mathematici Helvetici. 41: 51–72. 1966.
- Haefliger, André; Valentin, Poenaru (1964). "La classification des immersions combinatoires" (PDF). Publications Mathématiques de l'IHÉS. 23: 75–91. MR 0172296.
- Armand, Borel; Haefliger, André (1961). "La classe d'homologie fondamentale d'un espace analytique" (PDF). Bulletin de la Société Mathématique de France. 89: 461–513. doi:10.24033/bsmf.1571. MR 0149503.
- Bridson, Martin R.; Haefliger, André (1999). Metric Spaces of Non-Positive Curvature. Grundlehren der mathematischen Wissenschaften. 319. Berlin, Heidelberg: Springer. doi:10.1007/978-3-662-12494-9. ISBN 978-3-642-08399-0. MR 1744486.
References[]
- ^ Jump up to: a b André Haefliger at the Mathematics Genealogy Project
- ^ A. Haefliger (1956). "Sur l'extension du groupe structural d'un espace fibré". C. R. Acad. Sci. Paris. 243: 558–560.
External links[]
- André Haefliger in German, French and Italian in the online Historical Dictionary of Switzerland.
- "André Haefliger". Department of Mathematics, University of Geneva.
- Allyn Jackson (2019). "Interview with André Haefliger". Celebratio Mathematica.
- Swiss mathematicians
- 1929 births
- Living people
- University of Strasbourg alumni
- University of Geneva faculty
- Topologists
- Institute for Advanced Study people
- People from Nyon
- University of Lausanne alumni