| 词条 | Bernard Morin |
| 释义 |
| name = Bernard Morin | image = | image_size = | caption = | birth_date = {{birth date|1931|03|03}} | birth_place = Shanghai, China | death_date = {{death date and age|2018|03|12|1931|03|03}} | death_place = Paris, France | residence = | citizenship = | nationality = French | ethnicity = | field = Mathematics Topology | work_institutions = Institute for Advanced Study University of Strasbourg | alma_mater = École Normale Supérieure Centre National de la Recherche Scientifique | doctoral_advisor = René Thom | thesis_title = | thesis_url = | thesis_year = | doctoral_students = | influenced = | known_for = | prizes = | religion = | footnotes = | website = }} Bernard Morin ({{IPA-fr|mɔʁɛ̃|lang}}; 3 March 1931 in Shanghai, China – 12 March 2018)[1] was a French mathematician, specifically a topologist. Early life and educationMorin 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] CareerMorin was a member of the group that first exhibited an eversion of the sphere, i.e. a homotopy (topological metamorphosis) 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. He discovered the first parametrization of Boy's surface (earlier used as a half-way model) in 1978. His graduate student François Apéry later discovered (in 1986) another parametrization of Boy's surface, which conforms to the general method for parametrizing non-orientable surfaces.[4] Morin worked at the Institute for Advanced Study in Princeton. Most of his career, though, he spent at the University of Strasbourg. Morin's surface. See also
References1. ^{{Cite web |url=http://smf.emath.fr/content/d%25C3%25A9c%25C3%25A8s-de-bernard-morin |title=Décès de Bernard Morin |website=Société Mathématique de France |language=fr |access-date=2018-10-11}} 2. ^1 {{Cite web |url=http://smf.emath.fr/files/apery-morin.pdf |title=BERNARD MORIN (1931-2018) |last=Apéry |first=François}} 3. ^{{cite web|title=Bernard Morin|url=https://www.ias.edu/scholars/bernard-morin|website=Institute for Advanced Study|accessdate=20 July 2017|language=en}} 4. ^Weisstein, Eric W. "Boy Surface." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/BoySurface.html References
External links
10 : 1931 births|2018 deaths|French mathematicians|Blind people from France|Blind academics|Institute for Advanced Study visiting scholars|Topologists|University of Strasbourg faculty|Scientists from Shanghai|Educators from Shanghai |
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