Hermann Ludwig Gustav Wiener (15 May 1857,

Karlsruhe Karlsruhe ( , , ; South Franconian: ''Kallsruh'') is the third-largest city of the German state (''Land'') of Baden-Württemberg after its capital of Stuttgart and Mannheim, and the 22nd-largest city in the nation, with 308,436 inhabitants. ...

– 13 June 1939, Darmstadt) was a German mathematician.

Education and career

Hermann Wiener, whose father was the mathematician Christian Wiener, graduated from the ''Gymnasium'' in Karlsruhe. From 1876 to 1879 he studied mathematics and natural science at the ''Polytechnische Schule Karlsruhe'' (now the Karlsruhe Institute of Technology). From 1879 to 1882 he studied at the

Technical University of Munich The Technical University of Munich (TUM or TU Munich; german: Technische Universität München) is a public research university in Munich, Germany. It specializes in engineering, technology, medicine, and applied and natural sciences. Establis ...

under

Felix Klein Christian Felix Klein (; 25 April 1849 – 22 June 1925) was a German mathematician and mathematics educator, known for his work with group theory, complex analysis, non-Euclidean geometry, and on the associations between geometry and grou ...

and

Alexander von Brill Alexander Wilhelm von Brill (20 September 1842 – 18 June 1935) was a German mathematician. Born in Darmstadt, Hesse, Brill was educated at the University of Giessen, where he earned his doctorate under supervision of Alfred Clebsch. He held a c ...

and in 1881 at the

University of Leipzig Leipzig University (german: Universität Leipzig), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 Decemb ...

. In 1881 he received his ''

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'' (PhD) in Munich in mathematics with a thesis ''Über Involutionen auf ebenen Curven'' (On involutions on plane curves) under the supervision of Ludwig Seidel. In Karlsruhe in 1882 he passed the state examination for secondary school teachers. He was from 1882 to 1883 a ''Lehramtspraktikant'' (teaching trainee) at the ''Gymnasium'' in Karlsruhe and from 1882 to 1883 his father's assistant at the ''Polytechnische Schule Karlsruhe''. In 1885 Hermann Wiener habilitated at the

Martin Luther University of Halle-Wittenberg Martin Luther University of Halle-Wittenberg (german: Martin-Luther-Universität Halle-Wittenberg), also referred to as MLU, is a public, research-oriented university in the cities of Halle and Wittenberg and the largest and oldest university in ...

with a thesis ''Rein geometrische Theorie der Darstellung binärer Formen durch Punktgruppen auf der Geraden'' (Purely geometrical theory of the representation of binary forms by point groups on the line). From 1885 to 1894 he was a '' Privatdozent'' at the Martin Luther University of Halle-Wittenberg. In 1894 he was appointed a professor ordinarius at ''

Technische Universität Darmstadt The Technische Universität Darmstadt (official English name Technical University of Darmstadt, sometimes also referred to as Darmstadt University of Technology), commonly known as TU Darmstadt, is a research university in the city of Darmstadt ...

'' (TU Darmstadt), where he retired as professor emeritus in 1927. In 1890 Wiener was one of the founders of the

German Mathematical Society The German Mathematical Society (german: Deutsche Mathematiker-Vereinigung, DMV) is the main professional society of German mathematicians and represents German mathematics within the European Mathematical Society (EMS) and the International Math ...

(''Deutsche Mathematiker-Vereinigung'', DMV). He was elected in 1895 a member of the

German National Academy of Sciences Leopoldina The German National Academy of Sciences Leopoldina (german: Deutsche Akademie der Naturforscher Leopoldina – Nationale Akademie der Wissenschaften), short Leopoldina, is the national academy of Germany, and is located in Halle (Saale). Founded ...

(''Deutsche Akademie der Naturforscher Leopoldina'') and was appointed in 1907 ''Geheimer Hofrat'' (Court Councillor).

Selected publications

* (The first part of this work formed Hermann Wiener's habilitation thesis.) * * (On the theory of inversions) * (On geometric analysis) * (On geometric analysis. Confirmation) * * * (Six treatises on calculating with reflections, along with applications on the geometry of movements and on projective geometry; book consisting of reprints of six papers published from 1890 to 1893) * (identical text in: * (More on the foundations and structure of geometry) * (The classification of plane curves and cones of third order)

References

{{DEFAULTSORT:Wiener, Hermann 19th-century German mathematicians 20th-century German mathematicians Karlsruhe Institute of Technology alumni Technical University of Munich alumni Academic staff of the Martin Luther University of Halle-Wittenberg Academic staff of Technische Universität Darmstadt Members of the German National Academy of Sciences Leopoldina 1857 births 1939 deaths