Paul Rudolf Eugen Jahnke (born November 30, 1861 in Berlin, died October 18, 1921 in Berlin) was a German

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

. Jahnke studied

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

and

physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...

at the

Humboldt University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative o ...

, where he graduated in 1886. In 1889 he received his doctorate from

Martin-Luther-Universität 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 i ...

under Albert Wangerin on the integration of first-order

ordinary differential equations In mathematics, an ordinary differential equation (ODE) is a differential equation whose unknown(s) consists of one (or more) function(s) of one variable and involves the derivatives of those functions. The term ''ordinary'' is used in contrast w ...

. After that, he was a teacher at secondary schools in Berlin, where he simultaneously in 1901 taught at the Technische Hochschule Berlin-Charlottenburg and in 1905 he became a professor at the Mining Academy in Berlin, which merged in 1916 with the

Berlin Institute of Technology The Technical University of Berlin (official name both in English and german: link=no, Technische Universität Berlin, also known as TU Berlin and Berlin Institute of Technology) is a public research university located in Berlin, Germany. It was ...

. In 1919 he was

rector Rector (Latin for the member of a vessel's crew who steers) may refer to: Style or title *Rector (ecclesiastical), a cleric who functions as an administrative leader in some Christian denominations *Rector (academia), a senior official in an edu ...

of the

. In 1900 Jahnke read a paper at the

International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the Nevanlinna Prize (to be rename ...

in Paris. He was editor of the Archives of Mathematics and Physics and contributor to the Yearbook for the Progress of Mathematics. He wrote an early book on vector calculus but is now known primarily for his function tables, which first appeared in 1909. This was also translated into English and was in print into the 1960s. (Professor of Electrical Engineering at the Technical University of Stuttgart) contributed to later editions, as did others.

Selected works

* Jahnke: ''Zur Integration von Differentialgleichungen erster Ordnung, in welchen die unabhängige Veränderliche explicite nicht vorkommt, durch eindeutige doppeltperiodische Funktionen'' (dissertation), 1889 * Jahnke
''Vorlesungen über die Vektorenrechnung – mit Anwendungen auf Geometrie, Mechanik und mathematische Physik''
(lectures on vector analysis, with applications to geometry, mechanics, and mathematical physics), Teubner 1905 * Jahnke (jointly with ): ''Funktionentafeln mit Formeln und Kurven'' (tables of functions with formulas and graphs), Teubner. 1909, 1933, 1945, 7. Auflage 1966, edited by Fritz Emde until his death in 1951 and later by Friedrich Lösch as "Tafeln höherer Funktionen". In America, published a
''Tables of Functions With Formulas and Curves''
by Eugene Jahnke and Fritz Emde, Dover June 1945

References

{{DEFAULTSORT:Jahnke, Eugene Humboldt University of Berlin alumni Technical University of Berlin faculty 19th-century German mathematicians 1861 births 1921 deaths 20th-century German mathematicians