Jun-Ichi Igusa

Jun-Ichi Igusa ( Japanese 井草準一 , Igusa Jun'ichi ; born January 30, 1924 in Maebashi , Gunma Prefecture , Japan ; † November 24, 2013 in Baltimore , Maryland ) was a Japanese mathematician who studied algebraic geometry and Number theory.

Life

Igusa studied at the University of Tokyo and received his doctorate in Kyoto in 1953 . He was a professor at Tsukuba University before becoming a professor at Johns Hopkins University in 1955 , where Wei-Liang Chow was then. In 1958 he became a Sloan Research Fellow . From 1981 he was director of the Japanese-American Mathematics Institute at Johns Hopkins University, which promoted the exchange of scientists between the two countries. In 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 module functions . In 1952 he constructed the Picard varieties into algebraic varieties (at the same time also treated by T. Matsusaka, Wei-Liang Chow and André Weil ) and examined them also in positive characteristics, where he found pathologies. Local -adic zeta functions , which he investigated in the 1980s, are named after him. ${\ displaystyle p}$

Igusa was the editor of the American Journal of Mathematics for a long time .

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

Fonts

Theta Functions. Basic Teachings of Mathematical Sciences, Springer-Verlag, 1972
An Introduction to the Theory of Local Zeta Functions. AMS 2000.
Problems on Abelian functions at the time of Poincaré and some at present. BAMS 1982.
A Desingularization Problem in the Theory of Siegel Modular Functions. Mathematical Annals 1967.

Web links

Jun-Ichi Igusa in the Mathematics Genealogy Project (English)

Individual evidence

↑ krieger.jhu.edu: Jun-ichi Igusa, Noted Mathematician and Researcher, Died at 89 ( Memento of the original from December 3, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed November 29, 2013 @1@ 2

^ Mathematician Receives Japan's Order of the Sacred Treasure. Office of News and Information, Johns Hopkins University, January 2005, accessed July 28, 2009 .

personal data
SURNAME	Igusa, Jun-Ichi
ALTERNATIVE NAMES	井草準一 (Japanese); Igusa Jun'ichi
BRIEF DESCRIPTION	Japanese mathematician
DATE OF BIRTH	January 30, 1924
PLACE OF BIRTH	Maebashi , Gunma Prefecture , Japan
DATE OF DEATH	November 24, 2013
Place of death	Baltimore , Maryland

[1] rieger.jhu.edu: Jun-ichi Igusa, Noted Mathematician and Researcher, Died at 89 ( Memento of the original from December 3, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed November 29, 2013 @1@ 2

[2] Mathematician Receives Japan's Order of the Sacred Treasure. Office of News and Information, Johns Hopkins University, January 2005, accessed July 28, 2009 .