Wolfram Jehne

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Wolfram Jehne (born February 15, 1926 - † June 9, 2018 ) was a German mathematician who dealt with algebraic number theory. He was a professor at the University of Cologne .

Wolfram Jehne, Erlangen 1976

Life

Jehne studied with Helmut Hasse at the Humboldt University in Berlin . When Hasse went to Hamburg in 1950, he followed him like many other Hasse students. In his diploma thesis from 1952, he solved a problem posed by Hasse to characterize Abelian extensions of number fields by elements of the cohomology group of the Galois group belonging to the extension. Jehne solved the global case (as well as independently Gerhard Hochschild , Tadashi Nakayama ), for p-adic number fields, i.e. the local case, this was already solved by Igor Schafarewitsch in 1949, which was not known in the Hasse area at the time. In 1954 he received his doctorate from Hasse in Hamburg (on modern class field theory). For the new edition of Teubner's encyclopedia of mathematical sciences , he and Hasse edited the partial volume Algebraic Number Theory by Philipp Furtwängler in 1953 . In the Hasse area he was considered an expert on the then new cohomological methods in class field theory. In 1958/59 he was at the Institute for Advanced Study (on the recommendation of Emil Artin , whom Hasse asked for).

He was the co-author of a book on the mathematics of Sudoku .

The ancient historian Martin Jehne is his son.

Fonts

  • On modern class field theory, session reports Deutsche Akad. Wiss. Berlin, No. 3, 1954
  • The structure of the symplectic group via local and Dedekind rings, reports on the meetings of the Heidelberg Academy of Sciences, 1964
  • with Gabriele Dankert, Arnt Volkenborn : Seminar p-adic function theory, University of Cologne 1967
  • On knots in algebraic number theory, J. Reine Angew. Math., Vol. 311/312, 1979, 214-254, online
  • with Herbert Wingen: A mathematical theory of Sudokus, De Gruyter 2013

Individual evidence

  1. ↑ Obituary from June 16, 2018, newspaper group Cologne
  2. ↑ Jehne reports on the time with Hasse in Berlin in Wolfram Jehne, Erich Lamprecht: Helmut Hasse and Hermann Ludwig Schmid and their students in Berlin, in: Begehr u. a. Mathematics in Berlin 1998, pp. 143–149
  3. ↑ Jehne, Idelklassenrechnerensysteme and generalized theory of entangled products, Abh. Math. Sem. Universität Hamburg, Volume 18, 1952, pp. 70–98
  4. ^ Hochschild, Nakayama Cohomology in class field theory, Annals of Mathematics, Series 2, Volume 55, 1952, pp. 348-366
  5. ↑ Helmut Koch, The history of the theorem of Shafarevich in the theory of class formations, in Miyake, Class field theory - its centenary and prospect, Tokyo: Mathematical Society of Japan, Adv. Stud. Pure Math. 30, 2001, p. 87-105
  6. ↑ Wolfram Jehne in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  7. ^ Günter Frei, Franz Lemmermeyer, Peter Roquette, Emil Artin and Helmut Hasse: The correspondence 1923–1958, 2014, pp. 440–441
  8. ↑ This article engages with the numbers node a concept of Arnold Scholz on
personal data
SURNAME Jehne, Wolfram
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH February 15, 1926
DATE OF DEATH June 9, 2018