2024-07-13 13:31:03
With the death of Haïm Brezis on July 7 in Jerusalem, at the age of 80, one of the great masters of mathematical analysis has left us. Member, among others, of the Academy of Sciences, in France, and of the National Academy of Sciences and the American Academy of Arts and Sciences, in the United States, Haïm Brezis is recognized as one of the greatest mathematicians of the last fifty years. in the world. His influence in mathematics was considerable.
Born on June 1, 1944, under the pseudonym Jean-Jacques Vienne, in Riom-ès-Montagnes (Cantal), where his parents, Jews from Central Europe, hid, he took the first name Haïm only after the war (“life life)”, in Hebrew), while covering the names of his parents. After studying in Paris, he did his first job at the National Center for Scientific Research, before becoming a professor at Paris-VI, where he spent most of his French career. There he joined Jacques-Louis Lions (1928-2001) in the digital analysis company he founded and which bears his name today. This lab will be a crossroad of scientific activity and a place where many generations of researchers will be trained.
It is his work in the assessment of the work that first made him known, in the wake of the great French style, carried by Gustave Choquet (1915-2006) and Laurent Schwartz (1915-2002). His abstract work has found completely unexpected applications in recent years, such as in better transportation or modeling of pedestrian movements. Haïm Brezis also addressed nonlinear partial differential equations, which was one of the great inspirations of functional analysis. In Jacques-Louis Lions output, this work sheds light on partial differential equations from physics and mechanics using pure mathematical methods.
The results have become extraordinary
Your role in these areas will be unique. Many of Haïm Brezis’s results are now considered classics. His work, inspired by the theories of liquid crystals, superconductors and superfluids, the Ginzburg-Landau equations, the theory of surfaces with constant curvature or uniform materials, has significantly advanced the topics – these words in a surprising way. The Haïm Brezis logo in these areas will be available.
His latest research has addressed fundamental questions of real analysis and organization, with new methods and dynamic, new properties of work spaces. This work has had unprecedented results in computer science, in data and image processing.
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