MATHEMATICIAN
Kiyosi Itô
1915 - 2008
Kiyosi Itô
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
190k
Page Views (PV)
62.74
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 1,004. Before 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.
Most Popular Mathematicians in Wikipedia
Go to all RankingsIssai Schur
1875 - 1941
HPI: 62.82
Rank: 292
William George Horner
1786 - 1837
HPI: 62.79
Rank: 293
Yi Xing
683 - 727
HPI: 62.78
Rank: 294
Liu Xin
50 BC - 23
HPI: 62.77
Rank: 295
Vergilius of Salzburg
700 - 784
HPI: 62.76
Rank: 296
Olga Ladyzhenskaya
1922 - 2004
HPI: 62.75
Rank: 297
Kiyosi Itô
1915 - 2008
HPI: 62.74
Rank: 298
Peter Ludwig Mejdell Sylow
1832 - 1918
HPI: 62.74
Rank: 299
Georg Alexander Pick
1859 - 1942
HPI: 62.74
Rank: 300
Giambattista Benedetti
1530 - 1590
HPI: 62.73
Rank: 301
Alan Baker
1939 - 2018
HPI: 62.69
Rank: 302
Jakow Trachtenberg
1888 - 1951
HPI: 62.64
Rank: 303
Vitello
1230 - 1275
HPI: 62.64
Rank: 304
Contemporaries
Among people born in 1915, Kiyosi Itô ranks 75. Before 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 79. Before 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.
Others Born in 1915
Go to all RankingsGretl Braun
SOCIAL ACTIVIST
1915 - 1987
HPI: 63.55
Rank: 69
Don Budge
TENNIS PLAYER
1915 - 2000
HPI: 63.48
Rank: 70
Joseph Greenberg
LINGUIST
1915 - 2001
HPI: 63.36
Rank: 71
Georgy Sviridov
COMPOSER
1915 - 1998
HPI: 63.25
Rank: 72
Kunihiko Kodaira
MATHEMATICIAN
1915 - 1997
HPI: 62.94
Rank: 73
Hanns Martin Schleyer
SOCIAL ACTIVIST
1915 - 1977
HPI: 62.84
Rank: 74
Kiyosi Itô
MATHEMATICIAN
1915 - 2008
HPI: 62.74
Rank: 75
Thomas Merton
WRITER
1915 - 1968
HPI: 62.39
Rank: 76
Arsenio Erico
SOCCER PLAYER
1915 - 1977
HPI: 62.31
Rank: 77
Sister Rosetta Tharpe
MUSICIAN
1915 - 1973
HPI: 62.31
Rank: 78
Alicia Rhett
ACTOR
1915 - 2014
HPI: 62.06
Rank: 79
Kon Ichikawa
FILM DIRECTOR
1915 - 2008
HPI: 62.03
Rank: 80
Liisi Oterma
ASTRONOMER
1915 - 2001
HPI: 61.99
Rank: 81
Others Deceased in 2008
Go to all RankingsBettie Page
MODEL
1923 - 2008
HPI: 63.48
Rank: 73
Anthony Minghella
FILM DIRECTOR
1954 - 2008
HPI: 63.30
Rank: 74
Don S. Davis
ACTOR
1942 - 2008
HPI: 63.13
Rank: 75
Daniel Carleton Gajdusek
PHYSICIAN
1923 - 2008
HPI: 62.94
Rank: 76
Bernardin Gantin
RELIGIOUS FIGURE
1922 - 2008
HPI: 62.93
Rank: 77
Khertek Anchimaa-Toka
POLITICIAN
1912 - 2008
HPI: 62.83
Rank: 78
Kiyosi Itô
MATHEMATICIAN
1915 - 2008
HPI: 62.74
Rank: 79
Michael DeBakey
PHYSICIAN
1908 - 2008
HPI: 62.68
Rank: 80
Leyla Gencer
SINGER
1928 - 2008
HPI: 62.52
Rank: 81
Eva Dahlbeck
ACTOR
1920 - 2008
HPI: 62.42
Rank: 82
Gerard Damiano
FILM DIRECTOR
1928 - 2008
HPI: 62.39
Rank: 83
Cyd Charisse
ACTOR
1922 - 2008
HPI: 62.25
Rank: 84
Joseph M. Juran
ENGINEER
1904 - 2008
HPI: 62.24
Rank: 85
In Japan
Among people born in Japan, Kiyosi Itô ranks 560 out of 6,245. Before 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).
Others born in Japan
Go to all RankingsAnkō Itosu
MARTIAL ARTS
1831 - 1915
HPI: 62.83
Rank: 554
Jiro Taniguchi
POLITICIAN
1947 - 2017
HPI: 62.82
Rank: 555
Ken Kutaragi
COMPUTER SCIENTIST
1950 - Present
HPI: 62.81
Rank: 556
Hosokawa Gracia
POLITICIAN
1563 - 1600
HPI: 62.80
Rank: 557
Gosho Aoyama
COMIC ARTIST
1963 - Present
HPI: 62.76
Rank: 558
Mikio Naruse
FILM DIRECTOR
1905 - 1969
HPI: 62.76
Rank: 559
Kiyosi Itô
MATHEMATICIAN
1915 - 2008
HPI: 62.74
Rank: 560
Emperor Horikawa
POLITICIAN
1079 - 1107
HPI: 62.74
Rank: 561
Hibari Misora
ACTOR
1937 - 1989
HPI: 62.73
Rank: 562
Hiroshi Amano
PHYSICIST
1960 - Present
HPI: 62.72
Rank: 563
Sakanoue no Tamuramaro
MILITARY PERSONNEL
758 - 811
HPI: 62.71
Rank: 564
Shintaro Ishihara
POLITICIAN
1932 - 2022
HPI: 62.70
Rank: 565
Uesugi Kagekatsu
POLITICIAN
1556 - 1623
HPI: 62.70
Rank: 566
Among MATHEMATICIANS In Japan
Among mathematicians born in Japan, Kiyosi Itô ranks 3. Before 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).
Seki Takakazu
1642 - 1708
HPI: 64.25
Rank: 1
Kunihiko Kodaira
1915 - 1997
HPI: 62.94
Rank: 2
Kiyosi Itô
1915 - 2008
HPI: 62.74
Rank: 3
Heisuke Hironaka
1931 - Present
HPI: 61.36
Rank: 4
Goro Shimura
1930 - 2019
HPI: 59.84
Rank: 5
Yutaka Taniyama
1927 - 1958
HPI: 59.48
Rank: 6
Mikio Sato
1928 - 2023
HPI: 57.56
Rank: 7
Shigefumi Mori
1951 - Present
HPI: 57.50
Rank: 8
Kenkichi Iwasawa
1917 - 1998
HPI: 54.67
Rank: 9
Yasumasa Kanada
1948 - 2020
HPI: 53.48
Rank: 10
Shinichi Mochizuki
1969 - Present
HPI: 52.67
Rank: 11
Christopher Zeeman
1925 - 2016
HPI: 48.56
Rank: 12