# Gösta Mittag-Leffler

Gösta Mittag-Leffler | |
---|---|

Gösta Mittag-Leffler | |

Born |
16 March 1846 Stockholm |

Died |
7 July 1927 81) Djursholm | (aged

Citizenship | Swedish |

Fields | Mathematics |

Alma mater | Uppsala University (Ph.D., 1872) |

Thesis |
Om skiljandet af rötterna till en synektisk funktion af en variabel (1872) |

Doctoral advisor | Göran Dillner |

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

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 (as successor to Lorenz Lindelöf) 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 for Physics 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*.

## See also

- Mittag-Leffler function
- Mittag-Leffler star
- Mittag-Leffler summation
- Mittag-Leffler theorem
- Mittag-Leffler Institute
- Mittag-Lefflerbreen (glacier)

## Notes

- 1 2 3 Gilman, D. C.; Thurston, H. T.; Colby, F. M., eds. (1905). "Mittag-Leffler, Magnus Gösta, Baron von".
*New International Encyclopedia*(1st ed.). New York: Dodd, Mead.

## External links

Wikimedia Commons has media related to .Magnus Gösta Mittag-Leffler |

- Works by Gösta Mittag-Leffler at Project Gutenberg
- Works by or about Gösta Mittag-Leffler at Internet Archive
- O'Connor, John J.; Robertson, Edmund F., "Gösta Mittag-Leffler",
*MacTutor History of Mathematics archive*, University of St Andrews. - Gösta Mittag-Leffler at the Mathematics Genealogy Project