Gösta Mittag-Leffler and the Acta Mathematica

Magnus Gösta Mittag-Leffler (1846-1927)

Magnus Gösta Mittag-Leffler (1846-1927)

On March 16, 1846, Swedish mathematician Gösta Mittag-Leffler was born. Mittag-Leffler‘s contributions are connected chiefly with the theory of functions. His mathematical research helped advance the Scandinavian school of mathematics. He is probably best known for founding the international mathematical journal Acta Mathematica.

Mittag-Leffler was born in Stockholm, as the eldest of four siblings to the school principal John Olof Leffler and Gustava Wilhelmina Mittag. He later added his mother’s maiden name to his paternal surname. Both sides of the family were of German origin but had lived for several generations in Sweden. Gösta also showed his many talents as he progressed through school, and his teachers in elementary school and later those at the Gymnasium in Stockholm realised that he had an outstanding ability for mathematics.[1] He matriculated at Uppsala University in 1865. During his studies he supported himself by taking private pupils. He completed his Ph.D. in 1872 and became docent at the university the same year.

Perhaps the event which would have the greatest lasting effect on his life was being awarded a salary which came through an endowment with a condition attached which said that the holder had to spend three years abroad. In 1873 Mittag-Leffler set off for Paris, where he attended Charles Hermite‘s lectures on elliptic functions. From there, he continued to Göttingen and Berlin, where he studied under Weierstrass, which proved to be extremely influential in setting the direction of Mittag-Leffler’s subsequent mathematical work.

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 made numerous contributions to mathematical analysis particularly in areas concerned with limits and including calculus, analytic geometry and probability theory. He worked on the general theory of functions, studying relationships between independent and dependent variables. His best known work concerned the analytic representation of a one-valued function, this work culminated in the Mittag-Leffler theorem. This study began as an attempt to generalise results in Weierstrass’s lectures where he had described his theorem on the existence of an entire function with prescribed zeros each with a specified multiplicity. Mittag-Leffler tried to generalise this result to meromorphic function while he was studying in Berlin.[1]

In 1882, Mittag-Leffler founded the mathematical journal Acta Mathematica, with the help of King Oscar’s sponsorship, and partly paid for with the fortune of his wife Signe Lindfors, who came from a very wealthy Finnish family. He also served as chief editor of the journal for 45 years. Ever since the start it has been one of the most prestigious mathematics journals in the world. The original idea for such a journal came from Sophus Lie in 1881, but it was Mittag-Leffler’s understanding of the European mathematical scene, together with his political skills, which ensured its success. He attracted substantial contributions from the French mathematician Henri Poincaré, and in the early volumes he demonstrated his support for Georg Cantor’s work in set theory by publishing French translations of Cantor’s papers.[3]

The journal’s “most famous episode” concerns Henri Poincaré, who won a prize offered in 1887 by Oscar II of Sweden for the best mathematical work concerning the stability of the Solar System by purporting to prove the stability of a special case of the three-body problem. The prize paper was to be published in Acta Mathematica, but after the issue containing the paper was printed, Poincaré found an error that invalidated his proof. He paid more than the prize money to destroy the print run and reprint the issue without his paper, and instead published a corrected paper a year later in the same journal that demonstrated that the system could be unstable. This paper later became one of the foundational works of chaos theory.

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. In 1883 Mittag-Leffler secured a position at the University of Stockholm for the Russian mathematician Sofya Kovalevskaya, the first woman to achieve such a post in modern Europe. 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.

At yovisto academic search engine, you may be interested in an entertaining video explaining the Poincare Conjecture and its importance for science.

References and Further Reading:

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