Lennart Carleson

Lennart Axel Edvard Carleson, born on 18 March 1928, is a Swedish mathematician known as a leader in the field of harmonic analysis. One of his most noted accomplishments is his proof of Lusin's conjecture, the almost everywhere convergence of Fourier series of square-integrable functions, now known as Carleson's theorem. He was a student of Arne Beurling and received his Ph.D. from Uppsala University in 1950, served as director of the Mittag-Leffler Institute in Djursholm from 1968 to 1984, and was president of the International Mathematical Union from 1978 to 1982. In the theory of Hardy spaces his contributions include the corona theorem of 1962. He was awarded the Abel Prize in 2006 and has supervised 29 PhD students.