Albert Fathi (born 27 October 1951, in

Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...

) is an Egyptian-

French French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), ...

mathematician. He specializes in

dynamical system In mathematics, a dynamical system is a system in which a Function (mathematics), function describes the time dependence of a Point (geometry), point in an ambient space, such as in a parametric curve. Examples include the mathematical models ...

s and is currently a professor at the

Georgia Institute of Technology The Georgia Institute of Technology (commonly referred to as Georgia Tech, GT, and simply Tech or the Institute) is a public university, public research university and Institute of technology (United States), institute of technology in Atlanta, ...

. Fathi attended the ''Collège des frères Lasalle'' in

Cairo Cairo ( ; , ) is the Capital city, capital and largest city of Egypt and the Cairo Governorate, being home to more than 10 million people. It is also part of the List of urban agglomerations in Africa, largest urban agglomeration in Africa, L ...

and grew up bilingual in

and

Arabic Arabic (, , or , ) is a Central Semitic languages, Central Semitic language of the Afroasiatic languages, Afroasiatic language family spoken primarily in the Arab world. The International Organization for Standardization (ISO) assigns lang ...

. At age ten, he came as a political refugee to

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

and studied at the

École normale supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...

Saint-Cloud Saint-Cloud () is a French commune in the western suburbs of Paris, France, from the centre of Paris. Like other communes of Hauts-de-Seine such as Marnes-la-Coquette, Neuilly-sur-Seine and Vaucresson, Saint-Cloud is one of France's wealthie ...

. He received in 1980 his PhD from the University of Paris 11 under Laurence Siebenmann with thesis ''Transformations et homéomorphismes préservant la mesure''. From 1987 to 1992 he was a professor at the

University of Florida The University of Florida (Florida or UF) is a public university, public land-grant university, land-grant research university in Gainesville, Florida, United States. It is a senior member of the State University System of Florida and a preem ...

. Since 1992 he has taught at the

École normale supérieure de Lyon École or Ecole may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * Éco ...

(unit of pure and applied mathematics). He has also taught at the

École polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...

. He has been a visiting professor at the

Institute for Advanced Study The Institute for Advanced Study (IAS) is an independent center for theoretical research and intellectual inquiry located in Princeton, New Jersey. It has served as the academic home of internationally preeminent scholars, including Albert Ein ...

(1986/87), at the

Universidad Complutense de Madrid The Complutense University of Madrid (, UCM; ) is a public research university located in Madrid. Founded in Alcalá in 1293 (before relocating to Madrid in 1836), it is one of the oldest operating universities in the world, and one of Spain's ...

(Instituto de Matemática Interdisciplinar), in

Nanjing Nanjing or Nanking is the capital of Jiangsu, a province in East China. The city, which is located in the southwestern corner of the province, has 11 districts, an administrative area of , and a population of 9,423,400. Situated in the Yang ...

, in

Cambridge Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 Unit ...

and at MSRI. In 2013 he received the

Sophie Germain Prize The Sophie Germain Prize (in French: ''Prix Sophie Germain'') is an annual mathematics prize awarded by the French Academy of Sciences to researchers who have carried out fundamental research in mathematics. The award has been conferred every year ...

. He is a member of the Institut Universitaire de France. At the

International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the IMU Abacus Medal (known before ...

in 2014 in

Seoul Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...

, Fathi was an Invited Speaker with talk ''Weak KAM Theory: the connection between Aubry-Mather theory and viscosity solutions of the

Hamilton–Jacobi equation In physics, the Hamilton–Jacobi equation, named after William Rowan Hamilton and Carl Gustav Jacob Jacobi, is an alternative formulation of classical mechanics, equivalent to other formulations such as Newton's laws of motion, Lagrangian mecha ...

''.

Selected publications

* The Weak KAM Theorem in Lagrangian Dynamics, Cambridge University Press 201
Preliminayr version of ''Weak KAM Theorem in Lagrangian Dynamics''
* with François Laudenbach,

Valentin Poénaru Valentin Alexandre Poénaru (born 1932 in Bucharest) is a Romanian– French mathematician. He was a Professor of Mathematics at University of Paris-Sud, specializing in low-dimensional topology. Life and career Born in Bucharest, Romania, he d ...

: ''Thurston´s Work on Surfaces'', Princeton University Press 2012 (originally published in ''Travaux de Thurston'', Asterisque, tome 65/66, 1979) * editor with

Jean-Christophe Yoccoz Jean-Christophe Yoccoz (29 May 1957 – 3 September 2016) was a French mathematician. He was awarded a Fields Medal in 1994, for his work on dynamical systems. Yoccoz died on 3 September 2016 at the age of 59. Biography Yoccoz attended the Lyc� ...

: ''Dynamical systems: Michael Herman memorial volume'', Cambridge University Press 2006 * with

Michael Shub Michael Ira Shub (born August 17, 1943) is an American mathematician who has done research into dynamical systems and the complexity of real number algorithms. Career 1967: Ph.D. and early career In 1967, Shub obtained his Ph.D. degree at the U ...

, Remi Langevin: ''Global stability of dynamical systems'', Springer Verlag 1987 * editor with Yong-Geun Oh, Claude Viterbo: ''Symplectic topology and measure preserving dynamical systems'', AMS 2010 (Summer Conference, Snowbird 2007) * Systèmes dynamiques, Ecole Polytechnique 1997
''Dehn twists and pseudo-Anosov diffeomorphisms.''
Invent. Math. 87 (1987), no. 1, 129–151. * ''Théorème KAM faible et théorie de Mather sur les systèmes lagrangiens.'' Comptes Rendus de l'Académie des Sciences, Série I 324 (1997), no. 9, 1043–1046. * with Antonio Siconolfi
''Existence of C¹ critical subsolutions of the Hamilton–Jacobi equation.''
Invent. Math. 155 (2004), no. 2, 363–388. * with Antonio Siconolfi
''PDE aspects of Aubry-Mather theory for quasiconvex Hamiltonians.''
Calc. Var. Partial Differential Equations 22 (2005), no. 2, 185–228. * with

Alessio Figalli Alessio Figalli (; born 2 April 1984) is an Italian mathematician working primarily on the calculus of variations and partial differential equations. He was awarded the Peccot-Vimont Prize and the Peccot Lectures in 2012, the EMS Prize in 201 ...

''Optimal transportation on non-compact manifolds''

Israel Journal of Mathematics '' Israel Journal of Mathematics'' is a peer-reviewed mathematics journal published by the Hebrew University of Jerusalem ( Magnes Press). History Founded in 1963, as a continuation of the ''Bulletin of the Research Council of Israel'' (Section ...

175 (2010), 1–59.

References

{{DEFAULTSORT:Fathi, Albert 1951 births Living people Egyptian emigrants to France 20th-century French mathematicians 21st-century French mathematicians Institute for Advanced Study visiting scholars University of Florida faculty Academic staff of Paris-Sud University Dynamical systems theorists