imported>Serblans at 12:04, 30 March 2025

2025-03-30T12:04:40Z

New page

{{Short description|American mathematician}}
{{Use mdy dates|date=March 2013}}
{{Infobox scientist
| name = Alexandre Joel Chorin
| image = Alexandre Chorin.jpg
| image_size =
| caption =
| birth_date = {{birth date and age|1938|6|25}}
| birth_place = [[Warsaw]], Poland
| nationality = American
| field = [[Mathematics]]
| work_institutions = [[University of California, Berkeley]], [[Courant Institute of Mathematical Sciences]]
| alma_mater = {{unbulleted list|[[École Polytechnique Fédérale de Lausanne]]|[[New York University]]}}
| doctoral_advisor = [[Peter D. Lax]]
| doctoral_students = {{unbulleted list|[[Phillip Colella]]|[[Robert Krasny]]|[[Charles S. Peskin]]|[[Gary Andrew Sod]]|[[James Sethian]]}}
| thesis_title = Numerical Study of Thermal Convection in a Fluid Layer Heated from Below
| thesis_year = 1966
| known_for = {{unbulleted list|Artificial Compressibility Method|[[projection method (fluid dynamics)|Projection Method]]|Random Vortex Method|Implicit Sampling}}
}}

'''Alexandre Joel Chorin''' (born 25 June 1938) is an American mathematician known for his contributions to [[computational fluid mechanics]], [[turbulence]], and computational [[statistical mechanics]].

Chorin's work involves developing methods for solving physics and fluid mechanics problems computationally. His early work introduced several widely used numerical methods for solving the Navier-Stokes equations, including the method of artificial compressibility,<ref>{{cite web |url=http://math.berkeley.edu/~chorin/chorin67.pdf |title=A numerical method for solving incompressible viscous flow problems|last= |first= |date=1967 |website=math.berkeley.edu |access-date=2021-04-01}}</ref> the [[projection method (fluid dynamics)|projection method]],<ref>{{cite web |url=http://math.berkeley.edu/~chorin/chorin68.pdf |title=Numerical solution of the Navier-Stokes equations|last= |first= |date=1968 |website=math.berkeley.edu |access-date=2021-04-01}}</ref> and vortex methods.<ref>{{cite web |url=http://math.berkeley.edu/~chorin/jfm73.pdf |title=Numerical study of slightly viscous flow|last= |first= |date=1972 |website=math.berkeley.edu |access-date=2021-04-01}}</ref> He has made numerous contributions to turbulence theory.<ref>{{Cite book|url=https://www.springer.com/gp/book/9780387941974|title=Vorticity and Turbulence|first=Alexandre J.|last=Chorin|date=March 31, 1994|publisher=Springer-Verlag|via=www.springer.com}}</ref> In recent years he has been developing methods for prediction in the face of uncertainty <ref>{{cite web |url=http://math.berkeley.edu/~chorin/CHK02.pdf |title=Optimal prediction with memory|last= |first= |date=2001 |website=math.berkeley.edu |access-date=2021-04-01}}</ref> and for filtering and data assimilation.<ref>{{cite web |url=http://math.berkeley.edu/~chorin/CMT10.pdf |title=Implicit particle filters for data assimilation|last= |first= |date=2010 |website=math.berkeley.edu |access-date=2021-04-01}}</ref>

== Early life ==
Chorin was born on 25 June 1938 in [[Warsaw]], Poland. Born just one year before Hitler's invasion, his family fled Poland through [[Lithuania]] and [[Russia]] before spending 10 years living in [[Israel]] and 11 years living in [[Switzerland]]. Chorin came to the United States at 23 for graduate studies, nurturing his interest in fluid dynamics by working on the equations responsible for predicting [[ocean tides]].<ref>{{Cite web |title=Alexandre Chorin |url=https://www.berkeleysciencereview.com/ |access-date=2024-02-27 |website=www.berkeleysciencereview.com}}</ref>

== Career ==
Chorin is a [[University Professorship (University of California)|University Professor]] at the [[University of California]], a Professor of Mathematics at the [[University of California, Berkeley]], and a Senior Scientist at the [[Lawrence Berkeley National Laboratory]].

Chorin received the [[Engineer's degree|Ing. Dipl.]] Physics degree from the [[École Polytechnique Fédérale de Lausanne|EPFL]] (École Polytechnique Fédérale de Lausanne) in 1961, an M.S. in Mathematics from New York University in 1964, and a PhD in Mathematics from [[New York University]] in 1966. Chorin stayed at New York University as a researcher at the [[Courant Institute of Mathematical Sciences]] until 1969 when he was promoted to assistant professor and then associate professor the following year.

Chorin is widely recognized for his mentoring of graduate students<ref>{{cite web |url=http://genealogy.math.ndsu.nodak.edu/id.php?id=30630|title= list of dissertations |website=genealogy.math.ndsu.nodak.edu|access-date=2021-04-01}}</ref> and postdoctoral fellows, many of whom have become nationally and internationally recognized scientists in their own right. In 2008 he was honored with the Sarlo mentoring award by the [[University of California, Berkeley]].<ref>{{Cite web|url=https://mentoringawards.berkeley.edu/|title=Graduate Mentoring Awards|website=mentoringawards.berkeley.edu}}</ref>

== Awards ==
Chorin's awards include the National Academy Award in Applied Mathematics and Numerical Analysis (1989), the Norbert Wiener Prize of the American Mathematical Society and the Society for Industrial and Applied Mathematics (2000),<ref>{{Cite web|url=https://www.ams.org/notices/200004/comm-wiener.pdf|title=2000 AMS-SIAM Wiener Prize}}</ref> the Lagrange Prize of the International Council on Industrial and Applied Mathematics (2011) and the [[National Medal of Science]] (2012).<ref>{{Cite web|url=https://nationalmedals.org/laureate/alexandre-chorin/|title=Alexandre Chorin}}</ref><ref>[https://obamawhitehouse.archives.gov/the-press-office/2014/10/03/president-obama-honors-nation-s-top-scientists-and-innovators White House press statement] - President Obama Honors Nation’s Top Scientists and Innovators</ref> He is a member of the US [[National Academy of Sciences]] and a fellow of the [[American Academy of Arts and Sciences]], the [[Society for Industrial and Applied Mathematics]], and the [[American Mathematical Society]].

==Journal publications==
#{{Cite journal | last1 = Chorin | first1 = A. J. | doi = 10.1016/0021-9991(67)90037-X | title = A numerical method for solving incompressible viscous flow problems | journal = Journal of Computational Physics | volume = 2 | issue = 1 | pages = 12–26 | year = 1967 |bibcode = 1967JCoPh...2...12C }}
#[http://math.berkeley.edu/~chorin/chorin67.pdf Chorin, A. J. "A numerical method for solving incompressible viscous flow problems" J. Comput. Phys. 2 (1967), pp. 12-26.]
#[http://math.berkeley.edu/~chorin/chorin68.pdf Chorin, A. J. Numerical solution of the Navier-Stokes equations Math. Comp. 22 (1968) pp. 745-762]
#[http://math.berkeley.edu/~chorin/chorin73.pdf Chorin, A. J., Numerical study of slightly viscous flow, J. Fluid. Mech. 57 (1973), pp. 785-796.]{{Dead link|date=October 2018 |bot=InternetArchiveBot |fix-attempted=yes }}
#Chorin, A.J., Hald, O.H., and Kupferman, R., Optimal prediction and the Mori-Zwanzig representation of irreversible processes, Proc. Natl. Acad. Sci. USA 97 (2000), pp. 2968–2973.
#Chorin, A.J. and Tu, X., Implicit sampling for particle filters, Proc. Natl. Acad. Sci. USA 106 (2009), pp. 17249–17254.

== Books authored ==

*{{cite book | isbn = 0387979182 | title = A Mathematical Introduction to Fluid Mechanics | last1 = Chorin | first1 = Alexandre J. | year = 1993 | publisher = Springer Verlag | location = New York | edition = 3rd | last2 = Marsden | first2 = Jerrold E. | series = Texts in Applied Mathematics | volume = 4 }}
* Chorin, A. J., "Vorticity and Turbulence", Springer-Verlag (1994).<ref>{{cite journal|author=Majda, Andrew|author-link=Andrew Majda|title=Review: ''Vorticity and Turbulence'', by Alexandre Chorin|journal=Bull. Amer. Math. Soc. (N.S.)|volume=33|issue=1|pages=71–73|url=https://www.ams.org/journals/bull/1996-33-01/S0273-0979-96-00632-5/S0273-0979-96-00632-5.pdf|doi=10.1090/s0273-0979-96-00632-5|doi-access=free}}</ref>
* Chorin, A.J. and O.H. Hald, "Stochastic Tools in Mathematics and Science", Springer-Verlag, 3rd ed., (2013).

==References==
{{reflist}}

==External links==
*{{MathGenealogy|id=30630}}

{{Authority control}}

{{DEFAULTSORT:Chorin, Alexandre Joel}}
[[Category:Living people]]
[[Category:University of California, Berkeley College of Letters and Science faculty]]
[[Category:Numerical analysts]]
[[Category:American fluid dynamicists]]
[[Category:Members of the United States National Academy of Sciences]]
[[Category:Courant Institute of Mathematical Sciences alumni]]
[[Category:New York University faculty]]
[[Category:1938 births]]
[[Category:Fellows of the Society for Industrial and Applied Mathematics]]
[[Category:Fellows of the American Mathematical Society]]

Alexandre Chorin - Revision history

imported>Serblans at 12:04, 30 March 2025