Tamagawa Tsuneo

Tamagawa Tsuneo ( Japanese 玉河 恒 夫 ; born December 11, 1925 in Tokyo , Japan , † December 30, 2017 in New Haven , Connecticut ) was a Japanese mathematician teaching in the United States .

Tamagawa received his doctorate in 1954 from the University of Tokyo with Iyanaga Shōkichi . Then he was at the Institute for Advanced Study (1955/6, also 1958, 1970). Since 1963 he was a professor at Yale .

Tamagawa engaged in a. a. with number theory. He introduced measures named after him for algebraic groups over number fields ( Tamagawa numbers ), which play a major role in conjectures of arithmetic algebraic geometry such as those of Spencer Bloch and Kazuya Kato and in the theory of quadratic forms (new interpretation of the analytic class number formula of Carl Ludwig Siegel in the case of orthogonal groups). Let G be a connected linear algebraic group for example over the rational numbers. The invariant volume of the factor space of the nobility group after the discrete subgroup of the main nobility is the Tamagawa number by G. Takashi Ono and André Weil among others developed methods for calculating Tamagawa numbers .

Doris Schattschneider and Audrey Terras were among his doctoral students .

Individual evidence

1. ↑ Tsuneo Tamagawa. Beecher & Bennett Funeral Service, accessed January 4, 2018 . 

Japanese name: As is common in Japan, the family name comes before the first name in this article . Thus Tamagawa is the family name, Tsuneo the first name.