MATHEMATICIAN

Kiyosi Itô

1915 - 2008

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Kiyosi Itô (伊藤 清, Itō Kiyoshi, Japanese pronunciation: [itoː kiꜜjoɕi], 7 September 1915 – 10 November 2008) was a Japanese mathematician who made fundamental contributions to probability theory, in particular, the theory of stochastic processes. He invented the concept of stochastic integral and stochastic differential equation, and is known as the founder of so-called Itô calculus. He also pioneered the world connections between stochastic calculus and differential geometry, known as stochastic differential geometry. Read more on Wikipedia

Since 2007, the English Wikipedia page of Kiyosi Itô has received more than 189,312 page views. His biography is available in 29 different languages on Wikipedia (up from 26 in 2019). Kiyosi Itô is the 298th most popular mathematician (up from 315th in 2019), the 560th most popular biography from Japan (up from 607th in 2019) and the 3rd most popular Japanese Mathematician.

Memorability Metrics

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    Historical Popularity Index (HPI)

  • 29

    Languages Editions (L)

  • 5.22

    Effective Languages (L*)

  • 2.78

    Coefficient of Variation (CV)

Among MATHEMATICIANS

Among mathematicians, Kiyosi Itô ranks 298 out of 1,004Before him are Issai Schur, William George Horner, Yi Xing, Liu Xin, Vergilius of Salzburg, and Olga Ladyzhenskaya. After him are Peter Ludwig Mejdell Sylow, Georg Alexander Pick, Giambattista Benedetti, Alan Baker, Jakow Trachtenberg, and Vitello.

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Contemporaries

Among people born in 1915, Kiyosi Itô ranks 75Before him are Gretl Braun, Don Budge, Joseph Greenberg, Georgy Sviridov, Kunihiko Kodaira, and Hanns Martin Schleyer. After him are Thomas Merton, Arsenio Erico, Sister Rosetta Tharpe, Alicia Rhett, Kon Ichikawa, and Liisi Oterma. Among people deceased in 2008, Kiyosi Itô ranks 79Before him are Bettie Page, Anthony Minghella, Don S. Davis, Daniel Carleton Gajdusek, Bernardin Gantin, and Khertek Anchimaa-Toka. After him are Michael DeBakey, Leyla Gencer, Eva Dahlbeck, Gerard Damiano, Cyd Charisse, and Joseph M. Juran.

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In Japan

Among people born in Japan, Kiyosi Itô ranks 560 out of 6,245Before him are Ankō Itosu (1831), Jiro Taniguchi (1947), Ken Kutaragi (1950), Hosokawa Gracia (1563), Gosho Aoyama (1963), and Mikio Naruse (1905). After him are Emperor Horikawa (1079), Hibari Misora (1937), Hiroshi Amano (1960), Sakanoue no Tamuramaro (758), Shintaro Ishihara (1932), and Uesugi Kagekatsu (1556).

Among MATHEMATICIANS In Japan

Among mathematicians born in Japan, Kiyosi Itô ranks 3Before him are Seki Takakazu (1642), and Kunihiko Kodaira (1915). After him are Heisuke Hironaka (1931), Goro Shimura (1930), Yutaka Taniyama (1927), Mikio Sato (1928), Shigefumi Mori (1951), Kenkichi Iwasawa (1917), Yasumasa Kanada (1948), Shinichi Mochizuki (1969), and Christopher Zeeman (1925).