Gösta Mittag-Leffler

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Gösta Mittag-Leffler
Magnus Goesta Mittag-Leffler 1.jpg
Gösta Mittag-Leffler
Born 16 March 1846
Stockholm
Died 7 July 1927(1927-07-07) (aged 81)
Djursholm
Citizenship Swedish
Fields Mathematician
Doctoral students Ivar Fredholm
Hjalmar Mellin

Magnus Gustaf (Gösta) Mittag-Leffler (16 March 1846 – 7 July 1927) was a Swedish mathematician. His mathematical contributions are connected chiefly with the theory of functions.[1]

Biography[edit]

Mittag-Leffler was born in Stockholm, son of the school principal John Olof Leffler and Gustava Wilhelmina Mittag; he later added his mother's maiden name to his paternal surname. His sister was the writer Anne Charlotte Leffler. He matriculated at Uppsala University in 1865, completed his Ph.D. in 1872 and became docent at the university the same year. He was also curator (chairman) of the Stockholms nation (1872–1873). He next traveled to Paris, Göttingen and Berlin, studying under Weierstrass in the latter place.[1] He then took up a position as professor of mathematics at the University of Helsinki from 1877 to 1881 and then as the first professor of mathematics at the University College of Stockholm (the later Stockholm University); he was president of the college from 1891 to 1892 and retired from his chair in 1911. Mittag-Leffler went into business and became a successful businessman in his own right, but an economic collapse in Europe wiped out his fortune in 1922.

He was a member of the Royal Swedish Academy of Sciences (1883), the Finnish Society of Sciences and Letters (1878, later honorary member), the Royal Swedish Society of Sciences in Uppsala, the Royal Physiographic Society in Lund (1906) and about 30 foreign learned societies, including the Royal Society of London (1896) and Académie des sciences in Paris. He held honorary doctorates from the University of Oxford and several other universities.

Mittag-Leffler was a convinced advocate of women's rights and was instrumental in making Sofia Kovalevskaya a full professor of mathematics in Stockholm - the first woman anywhere in the world to hold that position. As a member of the Nobel Prize Committee in 1903, it was because of his intervention that the committee relented and awarded the prize to Marie Curie as well as her husband Pierre.

Mittag-Leffler founded the mathematical journal Acta Mathematica (1882), with the help of King Oscar's sponsorship,[1] and partly paid for with the fortune of his wife Signe Lindfors, who came from a very wealthy Finnish family. He collected a large mathematical library in his villa in the Stockholm suburb of Djursholm. The house and its contents was donated to the Academy of Sciences as the Mittag-Leffler Institute.

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