Ernst Koetter

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Ernst Rudolf Kötter (born August 7, 1859 in Berlin , † January 26, 1922 in Aachen ) was a German mathematician.

Kötter studied mathematics in Berlin from 1879 and received his doctorate in 1884 under Karl Weierstraß . In 1887, after completing his habilitation, he became a private lecturer at Berlin University, and in 1894 a professor. From 1897 he was Professor of Descriptive Geometry in Aachen as the successor to Friedrich Schur .

Kötter dealt with algebraic geometry and geometry. In 1886 he won a prize from the Berlin Academy for his basic features of a purely geometric theory of algebraic plane curves . In 1901 he published a history of projective geometry from Gaspard Monge to Karl von Staudt in the annual reports of the DMV .

He was a member of the Leopoldina .

Ernst Kötter was the brother of Fritz Kötter .

Fonts

  • Contributions to the theory of oscillations in plane curves of the third order. Berlin 1884 (dissertation).
  • Fundamentals of a purely geometrical theory of algebraic plane curves, Steiner's Foundation price publication. Treatises of the Berlin Academy of Sciences, 1887 ( Textarchiv - Internet Archive ).
  • The Hesse curve in a purely geometric treatment. In: Mathematical Annals. Volume 34, 1888, pp. 123-149.
  • Some of the main tenets of the third order curve doctrine. In: Mathematical Annals. Volume 38, 1891, pp. 287-297.
  • About those polyhedra that have the smallest surface area for a given type and volume. First treatise. In: Journal for pure and applied mathematics. Volume 110, 1892, pp. 198-229.
  • The development of synthetic geometry from Monge to Staudt (1847) . In: German Mathematicians Association (ed.): Annual report of the German Mathematicians Association . tape 5 , booklet 2. Teubner, 1901, ISSN  0012-0456 , p. 95 ( uni-goettingen.de - Part 1 of a report, pp. 1–485).
  • Construction of the second-order surface containing nine given points . In: German Mathematicians Association (ed.): Annual report of the German Mathematicians Association . tape 9 . Teubner, 1901, ISSN  0012-0456 , p. 99-102 ( uni-goettingen.de ).

References and comments

  1. ^ Lecturers at the Humboldt University in Mathematics
  2. ↑ Brief biographical information Michael Toeppel (ed.): General directory of the German Mathematicians Association 1890–1990. Institute for the History of Natural Sciences at the University of Munich, Munich 1991.
  3. ↑ Ernst Kötter in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  4. ^ List of members Leopoldina, Ernst Kötter
  5. ^ Michael Eckert: Arnold Sommerfeld. Science, Life and Turbulent Times 1868-1951. Springer, New York 2011, ISBN 978-1-4614-7460-9 , p. 115.
personal data
SURNAME Kötter, Ernst
ALTERNATIVE NAMES Kötter, Ernst Rudolf (full name)
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH August 7, 1859
PLACE OF BIRTH Berlin
DATE OF DEATH January 26, 1922
Place of death Aachen