August Ferdinand Möbius

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August Möbius
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August Ferdinand Möbius (17901868)
August Ferdinand Möbius

(1790-11-17)17 November 1790
Died26 September 1868(1868-09-26) (aged 77)
Nationality Saxon
Alma mater University of Leipzig
University of Göttingen
University of Halle
Known for Möbius strip
Möbius transformations
Möbius transform
Möbius function
Möbius inversion formula
Möbius–Kantor configuration
Möbius–Kantor graph
Scientific career
Fields Mathematician
Institutions University of Leipzig
Doctoral advisor Johann Pfaff
Other academic advisors Carl Friedrich Gauss
Karl Mollweide
Doctoral students Otto Wilhelm Fiedler
Other notable students Hermann Hankel

August Ferdinand Möbius ( UK: /ˈmɜːbiəs/ , US: /ˈm-,ˈm-/ ; [1] German: [ˈmøːbi̯ʊs] ; 17 November 1790 26 September 1868) was a German mathematician and theoretical astronomer.


Early life and education

Möbius was born in Schulpforta, Electorate of Saxony, and was descended on his mother's side from religious reformer Martin Luther. [2] He was home-schooled until he was 13, when he attended the College in Schulpforta in 1803, and studied there, graduating in 1809. He then enrolled at the University of Leipzig, where he studied astronomy under the mathematician and astronomer Karl Mollweide. [3] In 1813, he began to study astronomy under the mathematically inclined professor Carl Friedrich Gauss at the University of Göttingen, while Gauss was the director of the Göttingen Observatory. From there, he went to study with Carl Gauss's instructor, Johann Pfaff, at the University of Halle, where he completed his doctoral thesis The occultation of fixed stars in 1815. [3] In 1816, he was appointed as Extraordinary Professor to the "chair of astronomy and higher mechanics" at the University of Leipzig. [3] Möbius died in Leipzig in 1868 at the age of 77. His son Theodor was a noted philologist.


He is best known for his discovery of the Möbius strip, a non-orientable two-dimensional surface with only one side when embedded in three-dimensional Euclidean space. It was independently discovered by Johann Benedict Listing a few months earlier. [3] The Möbius configuration, formed by two mutually inscribed tetrahedra, is also named after him. Möbius was the first to introduce homogeneous coordinates into projective geometry. He is recognized for the introduction of the Barycentric coordinate system. [4]

Many mathematical concepts are named after him, including the Möbius plane, the Möbius transformations, important in projective geometry, and the Möbius transform of number theory. His interest in number theory led to the important Möbius function μ(n) and the Möbius inversion formula. In Euclidean geometry, he systematically developed the use of signed angles and line segments as a way of simplifying and unifying results. [5]

Collected works

See also

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  1. Wells, John C. (2008). Longman Pronunciation Dictionary (3rd ed.). Longman. ISBN   978-1-4058-8118-0.
  2. George Szpiro (2007). Poincaré's Prize: The Hundred-Year Quest to Solve One of Math's Greatest Puzzles. Plume. p.  66. ISBN   978-0-525-95024-0.CS1 maint: discouraged parameter (link)
  3. 1 2 3 4 August Ferdinand Möbius, The MacTutor History of Mathematics archive. Retrieved on 2017-04-26.
  4. Hille, Einar. "Analytic Function Theory, Volume I", Second edition, fifth printing. Chelsea Publishing Company, New York, 1982, ISBN   0-8284-0269-8, page 33, footnote 1
  5. Howard Eves, A Survey of Geometry (1963), p. 64 (Revised edition 1972, Allyn & Bacon, ISBN   0-205-03226-5)