Kiyoshi Itō

Japanese mathematician who pioneered stochastic calculus (1915–2008)
Person human Q455616
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Kiyoshi Itō

Summary

Kiyoshi Itō is a human[1]. Born in Hokusei-cho-ageki, Inabe[2], he… he was born on +1915-09-07T00:00:00Z[3]. He died in Kyoto[4]. He died on +2008-11-10T00:00:00Z[5]. He worked as a bureaucrat[6], mathematician[7], and university teacher[8]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (214 views/month, #7,176 of 1,000,298).[9]

Key Facts

  • Kiyoshi Itō was born in Hokusei-cho-ageki, Inabe[2].
  • Kiyoshi Itō passed away in Kyoto[4].
  • Kiyoshi Itō was born on +1915-09-07T00:00:00Z[3].
  • Kiyoshi Itō died on +2008-11-10T00:00:00Z[5].
  • Kiyoshi Itō held citizenship in Japan[10].
  • Kiyoshi Itō held citizenship in Empire of Japan[11].
  • Kiyoshi Itō worked as a bureaucrat[6].
  • Kiyoshi Itō's professions included mathematician[7].
  • Kiyoshi Itō worked as a university teacher[8].
  • Kiyoshi Itō's field of work was probability theory[12].
  • Kiyoshi Itō's field of work was theory of differential equations[13].
  • Kiyoshi Itō's field of work was stochastic calculus[14].
  • Kiyoshi Itō's field of work was mathematics[15].
  • Kiyoshi Itō's field of work was mathematical analysis[16].
  • Kiyoshi Itō's field of work was stochastic process[17].
  • Among Kiyoshi Itō's employers was Nagoya University[18].
  • Kiyoshi Itō was employed by Kyoto University[19].
  • Kiyoshi Itō was employed by Institute for Advanced Study[20].
  • Among Kiyoshi Itō's employers was Aarhus University[21].
  • Among Kiyoshi Itō's employers was Cornell University[22].
  • Among Kiyoshi Itō's employers was Gakushuin University[23].
  • Kiyoshi Itō was educated at University of Tokyo[24].
  • Kiyoshi Itō was educated at University of Tokyo[25].
  • Kiyoshi Itō's doctoral advisor was Shokichi Iyanaga[26].
  • A notable work attributed to Kiyoshi Itō is Itō's lemma[27].

Body

Origins and Family

Kiyoshi Itō was born in Hokusei-cho-ageki, Inabe[2]. He was born on +1915-09-07T00:00:00Z[3].

Education

Educated at University of Tokyo[24], a research university[28], in Japan[29], founded in 1877[30], headquartered in Hongō campus[31]. Kiyoshi Itō's doctoral advisor was Shokichi Iyanaga[26]. He earned the academic degree of Doctor of Philosophy[32].

Career and Affiliations

Recorded occupations include bureaucrat[6], mathematician[7], and university teacher[8]. Fields of work include probability theory[12], a branch of mathematics[33]; theory of differential equations[13], a branch of mathematics[34]; stochastic calculus[14], a branch of mathematics[35]; mathematics[15], an academic discipline[36]; mathematical analysis[16], an academic discipline[37]; and stochastic process[17], a mathematical concept[38]. Employers include Nagoya University[18], a national university[39], in Japan[40], founded in 1939[41], headquartered in Nagoya[42]; Kyoto University[19], a national university[43], in Japan[44], founded in 1897[45], headquartered in Kyoto[46]; Institute for Advanced Study[20], a research institute[47], in United States[48], founded in 1930[49], headquartered in Princeton[50]; Aarhus University[21], a public university[51], in Denmark[52], founded in 1928[53], headquartered in Aarhus[54]; Cornell University[22], a private university[55], in United States[56], founded in 1865[57], headquartered in Ithaca[58]; and Gakushuin University[23], a university[59], in Japan[60], founded in 1949[61], headquartered in Toshima[62]. Doctoral students include Shinzō Watanabe[63], Murali Rao[64], Takeyuki Hida[65], Roy King[66], Makiko Nisio[67], and Q102136743[68].

Works and Contributions

Notable works include Itō's lemma[27], Itō calculus[69], Itô–Nisio theorem[70], Itō isometry[71], and Itō diffusion[72]. Things named for Kiyoshi Itō include Itō calculus[73], a mathematical concept[74]; Itō's lemma[75], a theorem[76]; and Ito Prize[77], a science award[78], founded in 2003[79].

Recognition

Awards received include Imperial Prize of Japan Academy[80], an academic award[81], in Japan[82], founded in 1911[83]; Asahi Prize[84], an award[85], in Japan[86], founded in 1929[87]; doctor honoris causa from the Pierre and Marie Curie University[88]; Wolf Prize in Mathematics[89]; Kyoto Prize in Basic Sciences[90]; and Person of Cultural Merit[91].

Death and Burial

Kiyoshi Itō died on +2008-11-10T00:00:00Z[5]. He passed away in Kyoto[4].

Why It Matters

Kiyoshi Itō ranks in the top 0.72% of human entities by monthly Wikipedia readership (214 views/month, #7,176 of 1,000,298).[9] He has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[92] He is known by 49 alternative names across languages and contexts.[93]

Entities named for him include Itō calculus[73], a mathematical concept[74]; Itō's lemma[75], a theorem[76]; and Ito Prize[77], a science award[78], founded in 2003[79].

His notable doctoral advisees include Shinzō Watanabe[94], a mathematician[95], b. 1935[96], of Japan[97], awarded the doctor honoris causa from the Pierre and Marie Curie University[98], specialised in mathematics[99].

FAQs

Where was Kiyoshi Itō born?

Kiyoshi Itō was born in Hokusei-cho-ageki, Inabe[2].

Where did Kiyoshi Itō die?

Kiyoshi Itō died in Kyoto[4].

What did Kiyoshi Itō do for work?

Kiyoshi Itō worked as bureaucrat[6], mathematician[7], and university teacher[8].

Where did Kiyoshi Itō go to school?

Kiyoshi Itō was educated at University of Tokyo[24] and University of Tokyo[25].

What awards did Kiyoshi Itō receive?

Honors received include Imperial Prize of Japan Academy[80], Asahi Prize[84], doctor honoris causa from the Pierre and Marie Curie University[88], and Wolf Prize in Mathematics[89].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] . MacTutor History of Mathematics archive. wikidata.org.
  2. [4] . MacTutor History of Mathematics archive. wikidata.org.
  3. [10] . wikidata.org.
  4. [11] . wikidata.org.
  5. [24] . MacTutor History of Mathematics archive. books.google.cat. Provenance: wikidata.org.
  6. [25] . MacTutor History of Mathematics archive. wikidata.org.
  7. [12] . wikidata.org.
  8. [13] . wikidata.org.
  9. [14] . wikidata.org.
  10. [15] . Czech National Authority Database. Retrieved . wikidata.org.
  11. [16] . Czech National Authority Database. Retrieved . wikidata.org.
  12. [17] . Czech National Authority Database. Retrieved . wikidata.org.
  13. [6] . wikidata.org.
  14. [7] . Czech National Authority Database. Retrieved . wikidata.org.
  15. [8] . Czech National Authority Database. Retrieved . wikidata.org.
  16. [18] . MacTutor History of Mathematics archive. wikidata.org.
  17. [19] . MacTutor History of Mathematics archive. wikidata.org.
  18. [20] . MacTutor History of Mathematics archive. ias.edu. Provenance: wikidata.org.
  19. [21] . MacTutor History of Mathematics archive. wikidata.org.
  20. [22] . MacTutor History of Mathematics archive. wikidata.org.
  21. [23] . MacTutor History of Mathematics archive. books.google.cat. Provenance: wikidata.org.
  22. [80] . MacTutor History of Mathematics archive. wikidata.org.
  23. [84] . MacTutor History of Mathematics archive. wikidata.org.
  24. [88] . Journal officiel de la République française. wikidata.org.
  25. [89] . MacTutor History of Mathematics archive. wolffund.org.il. Provenance: wikidata.org.
  26. [90] . MacTutor History of Mathematics archive. wikidata.org.
  27. [91] . wikidata.org.
  28. [26] . wikidata.org.
  29. [63] . Mathematics Genealogy Project. wikidata.org.
  30. [64] . Mathematics Genealogy Project. wikidata.org.
  31. [65] . Mathematics Genealogy Project. wikidata.org.
  32. [66] . Mathematics Genealogy Project. wikidata.org.
  33. [67] . Mathematics Genealogy Project. wikidata.org.
  34. [68] . Mathematics Genealogy Project. wikidata.org.
  35. [32] . wikidata.org.
  36. [3] . Integrated Authority File. Retrieved . wikidata.org.
  37. [5] . Integrated Authority File. Retrieved . search.japantimes.co.jp. Provenance: wikidata.org.
  38. [27] . wikidata.org.
  39. [69] . wikidata.org.
  40. [70] . wikidata.org.
  41. [71] . wikidata.org.
  42. [72] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [94] . wikidata.org. → on this site
  2. [73] . wikidata.org. → on this site
  3. [75] . wikidata.org. → on this site
  4. [77] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [33] . Wikidata. wikidata.org. → on this site
  6. [34] . Wikidata. wikidata.org. → on this site
  7. [35] . Wikidata. wikidata.org. → on this site
  8. [36] . Wikidata. wikidata.org. → on this site
  9. [37] . Wikidata. wikidata.org. → on this site
  10. [38] . Wikidata. wikidata.org. → on this site
  11. [39] . Wikidata. wikidata.org. → on this site
  12. [40] . Wikidata. wikidata.org. → on this site
  13. [41] . Wikidata. wikidata.org. → on this site
  14. [42] . Wikidata. wikidata.org. → on this site
  15. [43] . Wikidata. wikidata.org. → on this site
  16. [44] . Wikidata. wikidata.org. → on this site
  17. [45] . Wikidata. wikidata.org. → on this site
  18. [46] . Wikidata. wikidata.org. → on this site
  19. [47] . Wikidata. wikidata.org. → on this site
  20. [48] . Wikidata. wikidata.org. → on this site
  21. [49] . Wikidata. wikidata.org. → on this site
  22. [50] . Wikidata. wikidata.org. → on this site
  23. [51] . Wikidata. wikidata.org. → on this site
  24. [52] . Wikidata. wikidata.org. → on this site
  25. [53] . Wikidata. wikidata.org. → on this site
  26. [54] . Wikidata. wikidata.org. → on this site
  27. [55] . Wikidata. wikidata.org. → on this site
  28. [56] . Wikidata. wikidata.org. → on this site
  29. [57] . Wikidata. wikidata.org. → on this site
  30. [58] . Wikidata. wikidata.org. → on this site
  31. [59] . Wikidata. wikidata.org. → on this site
  32. [60] . Wikidata. wikidata.org. → on this site
  33. [61] . Wikidata. wikidata.org. → on this site
  34. [62] . Wikidata. wikidata.org. → on this site
  35. [81] . Wikidata. wikidata.org. → on this site
  36. [82] . Wikidata. wikidata.org. → on this site
  37. [83] . Wikidata. wikidata.org. → on this site
  38. [85] . Wikidata. wikidata.org. → on this site
  39. [86] . Wikidata. wikidata.org. → on this site
  40. [87] . Wikidata. wikidata.org. → on this site
  41. [95] . Wikidata. wikidata.org. → on this site
  42. [96] . Wikidata. wikidata.org. → on this site
  43. [97] . Wikidata. wikidata.org. → on this site
  44. [98] . Wikidata. wikidata.org. → on this site
  45. [99] . Wikidata. wikidata.org. → on this site
  46. [74] . Wikidata. wikidata.org. → on this site
  47. [76] . Wikidata. wikidata.org. → on this site
  48. [78] . Wikidata. wikidata.org. → on this site
  49. [79] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [9] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [92] . Wikidata sitelinks. wikidata.org.
  3. [93] . Wikidata aliases. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Kiyoshi Itō. Retrieved April 19, 2026, from https://4ort.xyz/entity/kiyoshi-ito
MLA “Kiyoshi Itō.” 4ort.xyz Knowledge Graph, 4ort.xyz, 19 Apr. 2026, https://4ort.xyz/entity/kiyoshi-ito.
BibTeX @misc{4ortxyz_kiyoshi-ito_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Kiyoshi Itō}}, year = {2026}, url = {https://4ort.xyz/entity/kiyoshi-ito}, note = {Accessed: 2026-04-19}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 24d ago · MariuszRokin · 2026-04-30 view diff on Wikidata ↗
    Erdős number {'amount': '+3'}
    Aliases
    Influenced by Q178577, Paul Pierre Lévy, Andrey Kolmogorov
    Doctoral advisor Shokichi Iyanaga
    + 33 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P3368]]: 2138352, [[:toollabs:quickstatements/#/batch/257026|batch #257026]]"
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