Shokichi Iyanaga
Iyanaga Shokichi (Japanese弥 永 昌吉; born April 2, 1906 in Tokyo, † June 1, 2006 ) was a Japanese mathematician who worked on number theory.
Life
Iyanaga was the son of a banker. He studied from 1926 to 1929 at the University of Tokyo at number theorists Teiji Takagi, where he had already published as a student in 1928 his first scientific work. In 1931 he studied with Emil Artin in Hamburg, whose course on class field theory, he attended along with Claude Chevalley. In 1932 he continued his studies in Paris and attended the same year the International Congress of Mathematicians in Zurich with his teacher Takagi, with whom he afterwards even visited Berlin, Hamburg and Paris. After returning to Japan, he became assistant professor in 1935 in Tokyo ( at Takagi ). His most important work on the theory of numbers are from the 1930s (for example, a new proof of the proved by Philipp Furtwängler principal ideal theorem of class field theory in the treatises of the Mathematics Department of the University of Hamburg 1934). He remained at the University of Tokyo, where he in 1942 a full professorship received, until his retirement in 1967. Afterwards, he still taught until 1977 as a professor at the University Gakushuim in Tokyo. He still took 98 years on number theory seminar part.
Iyanaga was a member of the Academy of Sciences in Japan and has received several international awards. In 1975 he published his book Theory of Numbers in English translation in North Holland. In 1955 he organized an international conference on number theory in Tokyo, which was the research there important impulses ( including for the Shimura - Taniyama conjecture ). He also brought Claude Chevalley, to lecture in Japan ( 1953). Iyanaga was also active in mathematics education and has written many textbooks for schools.
He wrote two books about Evariste Galois and published an autobiography in 2004. In 1954 he published the first edition of the Encyclopedic Dictionary of Mathematics of the Japanese Mathematical Society out ( Sugaku Jiten, later also in English published by MIT Press ).
1960/61, he was a visiting professor at the University of Chicago and 1967/68 at the University of Nancy.
Among his pupils was Mikio Sato, Michio Suzuki, Kunihiko Kodaira, Michio Kuga, Goro Azumaya, Kenkichi Iwasawa and Tsuneo Tamagawa.
He was several times president of the Japanese Mathematical Society. 1952 to 1955 he was in the Council of the International Mathematical Union. In 1976 he was awarded the Order of the Rising Sun second class and 1978 he was a member of the Japan Academy. In 1979 he was awarded the Order of Academic Palms and in 1980 he became a member of the Legion of Honour.
Writings
- Collected Papers, Iwanami Publishers in 1994
- Kunihiko Kodaira with Gendai Sugaku Gaisetsu ( introduction to modern mathematics), Volume 1, Tokyo, Iwanami 1961
- Kikagaku Josetsu (Introduction to Geometry), Tokyo, Iwanami 1968