Jun-Ichi Igusa

Jun- Ichi Igusa (Japanese井 草 准 一, Igusa Jun'ichi; born January 30, 1924 in Maebashi, Gunma Prefecture, Japan, † November 24, 2013 in Baltimore, Maryland) was a Japanese mathematician, and with algebraic geometry number theory employed.

Life

Igusa studied at the University of Tokyo and received his doctorate in 1953 in Kyoto. He was a professor at the University of Tsukuba, before in 1955 he became a professor at the Johns Hopkins University, where at that time already Wei - Liang Chow was. From 1981 he was the Director of The Japanese- American Mathematics Institute, which promoted the exchange of scientists between the two countries. 1959/60 and 1970/71 he was at the Institute for Advanced Study.

Igusa dealt among other things with the theory of theta-functions and modular functions. In 1952 he constructed the Picard varieties to algebraic varieties. Local -adic zeta functions, which he studied in the 1980s, are named after him.

Igusa has long been the editor of the American Journal of Mathematics.

In 2005 he received the Order of the Sacred Treasure. In 1962 he was invited speaker at the International Congress of Mathematicians in Stockholm ( Structure theorems for modular varieties ). He is a Fellow of the American Mathematical Society.

Writings

• Theta Functions. Basic teachings of Mathematical Sciences, Springer -Verlag, 1972
• An Introduction to the Theory of Local Zeta Functions. AMS 2000.
• Problem on Abelian functions at the time of Poincaré and some at present. BAMS 1982.
• A Desingularization problem in the theory of Siegel modular functions. Mathematische Annalen in 1967.