The European Mathematical Society

Lars Hörmander, who received a Fields Medal in 1962, died November 25 at the age of 81. 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. He was a professor at Lund University from 1968 until his retirement in 1996 and served as director of the Mittag-Leffler Institute from 1984 to 1986.
Information: http://www.ams.org/news?news_id=1710
http://en.wikipedia.org/wiki/Lars_H%C3%B6rmander
http://www.maths.lth.se/news/2012/11/28/Hormander/