Abbas Bahri
{{Short description|Tunisian mathematician}}
{{Infobox person
| name = Abbas Bahri
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| birth_date = {{Birth date|df=y|1955|01|01}}
| birth_place = Tunis, Tunisia
| death_date ={{death date and age|df=y|2016|1|10|1955|1|1}}
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| education =
| alma_mater = Pierre-and-Marie-Curie University
| occupation = Mathematician, Professor at Rutgers University
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}}
Abbas Bahri (1 January 1955 – 10 January 2016) was a Tunisian mathematician.{{cite web |url=http://www.arsco.org/detailed/a5bb577c-f054-4f4c-b1ce-02a6644f6031 |title=Fifth Saudi Science conference "An Interview with Professor Abbas Bahri" |publisher=Arsco.org |accessdate=2014-05-09 |url-status=dead |archiveurl=https://web.archive.org/web/20140504103503/http://www.arsco.org/detailed/a5bb577c-f054-4f4c-b1ce-02a6644f6031 |archivedate=2014-05-04 }} He was the winner of the Fermat Prize and the Langevin Prize in mathematics. He was a professor of mathematics at Rutgers University.
He mainly studied the calculus of variations, partial differential equations, and differential geometry. He introduced the method of the critical points at infinity, which is a fundamental step in the calculus of variations.
Biography
Bahri received his secondary education in Tunisia and higher education in France. He attended the École Normale Superieure in Paris in 1974, the first Tunisian to do so.
In 1981, he completed his PhD from Pierre-and-Marie-Curie University. His dissertation advisor was the French mathematician Haïm Brezis.{{cite web|title=Abbas Bahri|url=http://genealogy.math.ndsu.nodak.edu/id.php?id=18218|website=Mathematics Genealogy Project|accessdate=11 July 2014}} Afterwards, he was a visiting scientist at the University of Chicago.
In October 1981, Bahri became a lecturer in mathematics at the University of Tunis. He taught as a lecturer at the École Polytechnique from 1984 to 1993."Abbas Bahri." (n.d.): Marquis Biographies Online. Web. 11 July 2014. In 1988, he became a tenured professor at Rutgers University.{{cite web|title=Faculty |publisher=Rutgers University |url=http://mail.math.rutgers.edu/people/index.php?type=faculty&id=10 |archive-url=https://web.archive.org/web/20140504141727/http://mail.math.rutgers.edu/people/index.php?type=faculty&id=10 |url-status=dead |archive-date=4 May 2014 |accessdate=4 May 2014 }} At Rutgers, he was director of the Center for Nonlinear Analysis from 1988 to 2002.
=Personal life=
He married Diana Nunziante on 20 June 1991.Bahri, Abbas. n.p.: 2014. Gale Virtual Reference Library. Web. 11 July 2014. His wife is from Italy and they had four children. On 10 January 2016, he died following a long illness at the age of 61.{{cite web |url=http://www.businessnews.com.tn/deces-du-mathematicien-tunisien-abbas-bahri,520,61605,3 |title=Décès du mathématicien tunisien Abbas Bahri |language=French|author= |date=10 January 2016 |website=BusinessNews.com.tn |publisher= |access-date= |quote=}}
Awards
In 1989, Bahri won the Fermat Prize for Mathematics, jointly with Kenneth Alan Ribet, for his introduction of new methods in the calculus of variations.
Works
- Pseudo-orbits of contact forms (1988)
- Critical Points at Infinity in Some Variational Problems (1989)
- Classical and Quantic Periodic Motions of Multiply Polarized Spin-Particles (1998)
- Flow lines and algebraic invariants in contact form geometry (2003)
- Recent progress in conformal geometry with Yongzhong Xu (2007)
=Selected publications=
- {{cite journal|last1=Bahri|first1=Abbas|title=Variations at infinity in contact form geometry.|journal=Journal of Fixed Point Theory & Its Applications|date=August 2009|volume=5|issue=2|pages=265–289|url=http://www.math.rutgers.edu/~abahri/papers/Variations%20at%20Infinity|doi=10.1007/s11784-009-0102-0|s2cid=120456000 }}
- {{cite journal|last1=Bahri|first1=Abbas|last2=Taimonov|first2=Iskander A.|title=Periodic Orbits in Magnetic Fields and Ricci Curvature of Lagrangian Systems|journal=Transactions of the American Mathematical Society|date=July 1998|volume=350|issue=7|pages=2697–2717|url=https://www.ams.org/journals/tran/1998-350-07/S0002-9947-98-02108-4/S0002-9947-98-02108-4.pdf|accessdate=11 July 2014|doi=10.1090/s0002-9947-98-02108-4|arxiv=dg-ga/9511016|s2cid=15064503 }}
References
{{reflist}}
External links
- [https://web.archive.org/web/20160509140230/http://math.rutgers.edu/~abahri/ Official Rutgers website]
{{Authority control}}
{{DEFAULTSORT:Bahri, Abbas}}
Category:Rutgers University faculty
Category:Tunisian mathematicians