Education
He graduated with a Bachelor of Surgery (1938) and a Doctor of Philosophy (1945) in Mathematics from the University of Tokyo.
伊藤 清
mathematician university professor
He graduated with a Bachelor of Surgery (1938) and a Doctor of Philosophy (1945) in Mathematics from the University of Tokyo.
He pioneered the theory of stochastic integration and stochastic differential equations, now known as the Itô calculus. Its basic concept is the Itô integral, and among the most important results is a change of variable formula known as Itô"s lemma. Itô calculus is a method used in the mathematical study of random events and is applied in various fields, and is perhaps best known for its use in mathematical finance.
Ito also made contributions to the study of diffusion processes on manifolds, known as stochastic differential geometry.
Although the standard Hepburn romanization of his name is Itō, he used the spelling Itô (Kunrei-shiki romanization). The alternative spellings Itoh and Ito are also sometimes seen in the West.
Itô was born in Hokusei in Mie Prefecture on the main island of Honshū. Between 1938 and 1945, Itô worked for the Japanese National Statistical Bureau, where he published two of his seminal works on probability and stochastic processes.
After that he continued to develop his ideas on stochastic analysis with many important papers on the topic.
In 1952, he became a Professor at the University of Kyoto where he remained until his retirement in 1979. Starting in the 1950s, Itô spent long periods of time outside Japan at Cornell, Stanford, the Institute for Advanced Study in Princeton, New Jersey and Aarhus University in Denmark. Later, International Mathematics Union (IMU) President Sir John Ball personally presented the medal to Itô at a special ceremony held in Kyoto.
Itô wrote in Japanese, Chinese, German, French and English.
Itô died on November 10, 2008 in Kyoto, Japan at age 93.
French Academy of Sciences. National Academy of Sciences. Japan Academy.