[Todos CMAT] Hormander

[Roberto Markarian]

      LARS HÖRMANDER, 1931-2012  

Lars Hörmander, who received a Fields Medal in 1962, died November 25 at the age of 81. In addition to the Fields Medal, Hörmander also was awarded the Wolf Prize in 1988 and the Leroy P. Steele Prize for Mathematical Exposition in 2006 for his influential four-volume The Analysis of Linear Partial Differential Operators. The prize citation states that "In the history of mathematics one is hard-pressed to find any comparable 'expository' work that covers so much material, and with such depth and understanding, of such a broad area of mathematics." Hörmander was a powerful analyst who revolutionized the modern theory of partial differential equations. Among many other contributions, his theories of pseudodifferential operators and Fourier integral operators will have lasting value. Hörmander held positions in the U.S., including a professorship at the Institute for Advanced Study, but spent most of his life in his native Sweden. He was a professor at Lund University from 1968 until his retirement in 1996 and served as director of the Mittag-Leffler Insitute from 1984 to 1986. Hörmander also authored Complex Analysis in Several Variables, which is considered a standard for a course in complex variables. He was elected to the Royal Swedish Academy of Sciences in 1968 and gave a plenary lecture in 1970 at the International Congress of Mathematicians in Nice. Read his biography on the MacTutor website and read more about his work in a post on Terence Tao's What's new blog.
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