Biography:Bernard Morin
Bernard Morin | |
|---|---|
| Born | Shanghai, China |
| Died | March 12, 2018 (aged 87) Paris, France |
| Nationality | French |
| Alma mater | École Normale Supérieure Centre National de la Recherche Scientifique |
| Scientific career | |
| Fields | Mathematics Topology |
| Institutions | Institute for Advanced Study University of Strasbourg |
| Doctoral advisor | René Thom |
Bernard Morin (French: [mɔʁɛ̃]; 3 March 1931 in Shanghai, China – 12 March 2018)[1] was a French mathematician, specifically a topologist.
Early life and education
Morin lost his sight at the age of six due to glaucoma, but his blindness did not prevent him from having a successful career in mathematics.[2] He received his Ph.D. in 1972 from the Centre National de la Recherche Scientifique.[3][2]
Career
Morin was a member of the group that first exhibited an eversion of the sphere,[4] i.e., a homotopy which starts with a sphere and ends with the same sphere but turned inside-out. He also discovered the Morin surface, which is a half-way model for the sphere eversion, and used it to prove a lower bound on the number of steps needed to turn a sphere inside out.
Morin discovered the first parametrization of Boy's surface (earlier used as a half-way model), in 1978. His graduate student François Apéry, in 1986, discovered another parametrization of Boy's surface, which conforms to the general method for parametrizing non-orientable surfaces.[5]
Morin worked at the Institute for Advanced Study in Princeton, New Jersey. Most of his career, though, he spent at the University of Strasbourg.
- Morin's surface.
See also
- Blind mathematicians: Leonhard Euler, Nicholas Saunderson, Lev Pontryagin, Louis Antoine, Zachary Battles
References
- ↑ "Décès de Bernard Morin" (in fr). http://smf.emath.fr/content/d%25C3%25A9c%25C3%25A8s-de-bernard-morin.
- ↑ 2.0 2.1 Apéry, François. "BERNARD MORIN (1931-2018)" (in fr). http://smf.emath.fr/files/apery-morin.pdf.
- ↑ "Bernard Morin" (in en). https://www.ias.edu/scholars/bernard-morin. Retrieved 20 July 2017.
- ↑ Morin, Bernard (13 November 1978). "Équations du retournement de la sphère" (in fr). C. R. Acad. Sci. Paris: 879–882. https://gallica.bnf.fr/ark:/12148/bpt6k6238948x/f407.item. Retrieved 26 February 2021.
- ↑ Weisstein, Eric W.. "Boy Surface". https://mathworld.wolfram.com/BoySurface.html.
George K. Francis & Bernard Morin (1980) "Arnold Shapiro's Eversion of the Sphere", Mathematical Intelligencer 2(4):200–3.
External links
- Photos of Morin with stereolithography models of sphere eversion.
- The World of Blind Mathematicians, PDF file at the American Mathematical Society's website.
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