Tadao Tannaka (淡中 忠郎, Tannaka Tadao, December 27, 1908 – October 25, 1986) was a Japanese mathematician who worked in algebraic number theory.

Biography

Tannaka was born in Matsuyama, Ehime Prefecture on December 27, 1908.[1][2][3] After receiving a Bachelor of Science in mathematics from Tohoku Imperial University in 1932, he was appointed a lecturer in the university in 1934 and received a Doctor of Science degree from the university in 1941.[1][3] He was promoted to assistant professor in 1942 and full professor in 1945.[1][2][3] Tannaka was a member at the Institute for Advanced Study from September 1955 to April 1957.[1][3][4] Tannaka retired from Tohoku University in 1972, after which he served as a full professor at Tohoku Gakuin University until 1981.[1][3]

Tannaka was an editor of the Tohoku Mathematical Journal and a member of the board of directors of the Mathematical Society of Japan.[1] Tannaka was also in charge of the "Mathematics Chat" article series in the monthly Mathematics for Universities [jp] magazine from 1960 onwards.[5]

Tannaka died in Tokyo on October 25, 1986.[1][2][3]

Research

Tannaka is known for developing the theory of Tannaka–Krein duality, which generalizes Pontryagin duality to noncommutative compact groups and led to the development of Tannakian formalism.[1][2][6][7]

Awards

Tannaka was a recipient of the Order of the Rising Sun (3rd Class) in 1980.[3]

See also

References

  1. ^ a b c d e f g h "Tadao Tannaka: 1908--1986". Tohoku Mathematical Journal. 39 (1). 1987.
  2. ^ a b c d 淡中忠郎 とは. Kodansha Encyclopedia of Japan (in Japanese). Kotobank. Retrieved December 20, 2020.
  3. ^ a b c d e f g 淡中忠郎. 20世紀日本人名事典 (20th-century people in Japan: A biographical dictionary) (in Japanese). Kotobank. Retrieved December 20, 2020.
  4. ^ "Tadao Tannaka". Institute for Advanced Study. 9 December 2019. Retrieved December 20, 2020.
  5. ^ "東京出版創立30周年記念の集い" [Tokyo Publishing 30th Anniversary Gathering]. Mathematics for Universities [jp] (in Japanese). 30 (7). Hiroo, Shibuya Ward, Tokyo: Tokyo Publishing [jp]: 36. July 1986. Periodical 05949-7.
  6. ^ Joyal, André; Street, Ross (1991). "Introduction to Tannaka Duality and Quantum Groups in". Category Theory II, Proc. Como 1990 (PDF). Lecture Notes in Mathematics. Vol. 1488. pp. 411–492.
  7. ^ Deligne, Pierre (2007) [1990], "Catégories tannakiennes", The Grothendieck Festschrift, vol. II, Birkhauser, pp. 111–195, ISBN 9780817645755