Ludwig Schlesinger (mathematician)

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Ludwig Schlesinger

Ludwig Schlesinger (Slovak Ľudovít Schlesinger , Hungarian Schlesinger Lajos ; born November 1, 1864 in Tyrnau , Pressburg county ; † December 15, 1933 in Gießen ) was a Slovak - Hungarian - German mathematician of Jewish descent. He did research in the field of linear complex differential equations .

Life

Ludwig Schlesinger, who was baptized as a Protestant and the son of a businessman, attended secondary school in Preßburg and studied physics and mathematics at the Ruprecht-Karls-Universität Heidelberg and the Friedrich-Wilhelms-Universität zu Berlin from 1882 . In 1887 he received his doctorate in Berlin with a doctoral thesis under Lazarus Immanuel Fuchs and Leopold Kronecker . He completed his habilitation in Berlin in 1889. In 1894 he received the title of Prussian professor.

In 1897 he became associate professor at the Rheinische Friedrich-Wilhelms-Universität Bonn and in the same year full professor at the University of Cluj-Napoca in Transylvania , where he also taught theoretical astronomy in addition to mathematics. In 1910 he took a leave of absence to teach at the Academy for Social and Commercial Sciences in Frankfurt am Main , was a full professor at the University of Budapest for a short time in 1911 and from 1911 professor at the Hessian Ludwig University (today: Justus Liebig University Gießen ), at which he taught until 1930 when he retired for health reasons.

In 1933, at the age of 69, the National Socialists revoked his teaching license because he had Jewish ancestors. He died shortly afterwards.

In Gießen in 1921 he founded the series of publications from the Mathematical Seminar Gießen , expanded the mathematical library and in 1918 was a co-founder and long board member of the University Society.

He was married to the daughter of Lazarus Fuchs and had a son and a daughter. The daughter Hildegard (1903–1969) was a physicist, but after marrying the Assyriologist Julius Lewy (1895–1983) she turned to Assyriology and after 1933 moved with her husband to the USA. The son Eilhard Schlesinger (1909–1968) was a classical philologist and professor in Argentina.

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Schlesinger was also active as a science historian. He wrote an article on the theory of functions with Carl Friedrich Gauß in his collected works and translated the geometry of René Descartes (published 1894). He was one of the organizers of the 100-year celebrations for János Bolyai and published the works of his teacher Lazarus Fuchs, who was also his father-in-law, with Richard Fuchs from 1904 to 1909 .

Like his teacher Fuchs, he mainly researched linear ordinary differential equations in the complex. His two-volume handbook of the theory of linear differential equations was published by Teubner in Leipzig from 1895 to 1898 (vol. 2 in two parts), introduction to the theory of ordinary differential equations based on functional theory in 1922 (in the 3rd edition), lectures on linear differential equations 1908 and automorphs Functions 1924 (de Gruyter). In 1909 he wrote a large report for the annual report of the German Mathematical Society on the history of linear differential equations since 1865. He also dealt with differential geometry and published a book of lectures on Einstein's general theory of relativity. Today his work can still be found in differential geometry (Schlesinger equations, Schlesinger transformations), his current publication is On a class of differential systems of any order with fixed critical points (Journal für Reine und Angewandte Mathematik 1912). There he deals with a special case of Hilbert's 21st problem (existence of differential equations with prescribed monodromic group, Riemann-Hilbert problem), isomonodromic deformations of a differential equation of the Fuchs type.

From 1929 until his death he was co-editor of the journal for pure and applied mathematics .

Honors

He was a member of the Mathematical Society in Charkow and the Circolo Matematico di Palermo .

literature

Web links

Individual evidence

  1. ^ Gottwald, Ilgauds, Schlote: Lexicon of important mathematicians , Bibliographisches Institut, Leipzig 1990
  2. ↑ Dissertation: About linear homogeneous differential equations of the fourth order, between whose integrals homogeneous relations of higher than first degree exist
personal data
SURNAME Schlesinger, Ludwig
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH November 1, 1864
PLACE OF BIRTH Tyrnau , Pressburg county
DATE OF DEATH December 15, 1933
Place of death to water