Mittag-Leffler Institute

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The Mittag-Leffler Institute of the Royal Swedish Academy of Sciences in Stockholm is a research institute for mathematics. It was founded in 1916 by Gösta Mittag-Leffler , who (together with his wife Signe) made his villa (from the years 1890 to 1906, with park and additional buildings) and his mathematical research library available. Since 1919 it has been affiliated with the Swedish Academy, but largely independent in its management.

Mittag-Leffler played an important role in the international mathematician community at the end of the 19th century and the beginning of the 20th century, among other things as the founder of Acta Mathematica (1882) and because of his good connections to both French and German mathematicians.

Mittag-Leffler was a wealthy businessman and was initially able to provide sufficient funds, but after a stock market slump in 1922 the funds dwindled, and with Mittag-Leffler's death in 1927 he and the institute were bankrupt. Initially, the institute was then headed by Torsten Carleman , who lived in the villa and was a professor at the university. At that time the institute essentially only consisted of the library. Even after Carleman's death in 1949, not much changed until it was revived by Lennart Carleson in 1969. The institute was expanded with financial support from the Wallenberg Foundation and insurance companies. Carleson was the director until 1984.

The director until 2010 was Anders Björner , professor of mathematics (and specialist in combinatorics) at the Royal Technical University (KTH) in Stockholm. Ari Laptev has been director since 2011 .

Every year or for a semester, the institute dedicates itself to a mathematical specialty and invites leading scientists together with those from Scandinavia. They see themselves as a research institute for the entire Scandinavian countries and are also supported by Denmark and Norway.

In addition to Acta Mathematica, the institute publishes the journal Arkiv för Matematik (founded in 1903).

The institute is based in Djursholm (Auravägen 17), a suburb 10 km northeast of central Stockholm.

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