Tadao Tannaka (淡中 忠郎, Tannaka Tadao, December 27, 1908 – October 25, 1986) was a Japanese mathematician who worked in algebraic number theory.
Tadao Tannaka | |
---|---|
Born | Matsuyama, Ehime Prefecture, Japan | December 27, 1908
Died | October 25, 1986 Tokyo, Japan | (aged 77)
Alma mater | Tohoku University |
Known for | Tannaka–Krein duality Tannakian formalism |
Awards | 3rd Class Order of the Rising Sun (1980) |
Scientific career | |
Fields | Mathematics |
Institutions | Tohoku University Tohoku Gakuin University Institute for Advanced Study |
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 magazine from 1960 onwards.[5]
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]
Tannaka was a recipient of the Order of the Rising Sun (3rd Class) in 1980.[3]