1. Torsten Carleman, born Tage Gillis Torsten Carleman, was a Swedish mathematician, known for his results in classical analysis and its applications.
10 Facts About Torsten Carleman
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Later, he worked in the theory of partial differential equations, where he introduced the Torsten Carleman estimates, and found a way to study the spectral asymptotics of Schrodinger operators.
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In 1932, following the work of Henri Poincare, Erik Ivar Fredholm, and Bernard Koopman, he devised the Torsten Carleman embedding, a way to embed a finite-dimensional system of nonlinear differential equations.
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In 1935, Torsten Carleman introduced a generalisation of Fourier transform, which foreshadowed the work of Mikio Sato on hyperfunctions; his notes were published in Carleman.
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Torsten Carleman was born in Visseltofta to Alma Linnea Jungbeck and Karl Johan Torsten Carleman, a school teacher.
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Torsten Carleman studied at Vaxjo Cathedral School, graduating in 1910.
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Torsten Carleman continued his studies at Uppsala University, being one of the active members of the Uppsala Mathematical Society.
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Torsten Carleman was the most active speaker in the Uppsala Mathematical Society and a well-trained gymnast.
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Torsten Carleman was elected a member of the Royal Swedish Academy of Sciences in 1926 and of the Finnish Society of Sciences and Letters in 1934.
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From 1929 to 1946 Torsten Carleman was married to Anna-Lisa Lemming, the half-sister of the athlete Eric Lemming who won four golden medals and three bronze at the Olympic Games.