cv   xavier  gérard  viennot

web  site:
January  2009

	born 25 February 1945,
1965-1969  student Ecole Normale Supérieure Ulm , Paris.

 from 1969 till today: Researcher at CNRS (National Center for Scientific Research, France)
	Researcher Junior (1969-1983), from 1983: Research Senior (”Directeur de Recherche”),
Successive Institutions in France: University of Paris, Ecole Normale Supérieure, University of Strasbourg and from 1980, LaBRI at University of Bordeaux.

Distinctions and honors
- PhD 1971, University of Paris
- “Thèse d’Etat” (or “Habilitation”) 1974, University of Paris, 
 	both under the supervision of M.P.Schützenberger, from the french Académie des Sciences
- A. Châtelet medal  (for my work in algebra), 1974
- Silver Medal at CNRS, 1992  (for my work in combinatorics and control theory)

Visiting Professor positions
- visiting professor, UCSD, USA, spring 1981, spring 1984
- visiting professor, UQAM (University of Quebec at Montreal), fall 1983, 1987-88 and 1992-93
- visiting professor, University of Wuhan, China, 1986 (2 months) and Nankai University, Tianjin, 		China, 1996 and 1999
- visiting researcher, TIFR, Mumbai, Dpt of Theoretical Physics, 1986 (2 months)

Visiting Fellow positions
- NSF fellowship UCSD (University of California at San Diego), USA, 1978-79 (1 1/2 year)
-  “Megyunya distinguished fellow”, 1996 (3 months), Center for Statistical Mechanics, 
	University of  Melbourne, Australia
-  MSRI  (Mathematical Science Research Institute, Berkeley, USA, 1996 (one month)
- CMM, (Center for Mathematical Modelisation), Santiago, Chili, 2003/04 (2 months)
- Mittag-Leffler Institute, Sweden, 1992 (one month) and 2005 (one month)
- Isaac Newton Institute for Mathematical Science, Cambridge, U.K., 2008 (one month)
- Erwin Schrödinger Institute for Mathematical Physics, Vienna, Austria, 2008 (one month)

	The work of X.Viennot is in combinatorics with interactions and applications to pure and applied mathematics, computer science and physics. He founded in 1980 and directed for 20 years in Bordeaux a combinatorics center, well known internationally.

	The main researches domain of X.Viennot is enumerative, algebraic and bijective combinatorics. Combinatorial mathematics is nowadays a very active field, knowing a spectacular Renaissance. A new “paradigm”, the “bijective paradigm”  is revolutionizing classical combinatorics, and thus certain parts of pure and applied mathematics and theoretical physics. This attitude is the specificity of the Bordeaux school of Combinatorics. The researches of X.Viennot are pluridisciplinar, and he applied or made some interactions between enumerative and algebraic combinatorics with some parts of pure mathematics (algebra, classical analysis, q-series, orthogonal polynomials, special functions, ...), theoretical computer science (algorithmics, data structures, automata and language theory), computer graphics (image synthesis of trees and landscapes), control theory, theoretical physics (exactly solved models in statistical mechanics, dynamical systems far from equilibrium such as PASEP, fractal physics and Lorentzian quantum gravity), molecular biology (ARN’s secondary structures). Since 2006, X.Viennot is responsible for the ANR interdisciplinary research project MARS (mathematics, computer science, physics) “Combinatorial Physics: Around alternating sign matrices and the Razumov-Stroganov conjecture on spins chains model”.

Papers, Books and conferences
	X.Viennot has written two books and published about 90 research papers in international journals in mathematics, computer science and physics. He gave several hundreds invited conferences, communications and colloquia in various countries:  Australia, Austria, Canada, China, Chile, Croatia, Denmark, England, France, Germany, India, Indonesia, Israel, Island, Italy, Portugal, Russia, Spain, Sweden, Switzerland, Singapore, United States, Venezuela. 
	Mention for mathematics: BOURBAKI seminar, for computer science: SIGGRAPH and IMAGINA, and for Physics TIFR, Mumbai.
	 In particular X.Viennot gave many conferences in India (TIFR, IIT Mumbai and Chennai, Maths Institute Chennai, Pondicherry, Cochin, New-Delhi, etc ...).

Graduate Courses
	X.Viennot  have given many courses in various universities and research centers: during ten year at ENS (Ecole Normale Supérieure, Paris), graduate classes at Universities of Paris, Orsay and Bordeaux, in physics at the CEA Saclay, and also abroad: San Diego, Montreal, Firenze, Mumbai, Tianjin, Melbourne, Caracas. For many years he contributed for the development of a combinatorics center in Firenze (Italy) and in Montreal with the creation of LACIM (Laboratory for Combinatorics and Mathematical Informatics). He also help for the development of a combinatorial center in Nankai University, Tianjin, China. X.Viennot had directly 11 PhD students, and contributed to the education of another dozen. By filiation from master to students, he is “great-grand father”. Some of his former students are Professors or Research Director at CNRS.

Vulgarization of Science
	One of the activities of X.Viennot is also the vulgarization of mathematics and more generally science. The “bijective paradigm” in combinatorics allows him to give the passion for contemporary research to colleges professors and students, in France and in Quebec, and also with “wide audience” conferences. He also made some experiment at primary schools. With M.Pig Lagos, story-teller and the violinists M.Fredentheil and G.Duchamp he created the association “Cont’Science” for the promotion and divulgation of science, associated to tales of the world and music. 
See website: , where some videos can be seen, and also a podcast of an interview on the french radio “France-Culture” about mathematics and the celebration of the 300th anniversary of Leonhard Euler.

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