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 September 7, 1915[3]. He died in Kyoto[4]. He died on November 10, 2008[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 (3,303 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 September 7, 1915[3].
  • Kiyoshi Itō died on November 10, 2008[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 September 7, 1915[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]. Academic degrees include Doctor of Philosophy[32] and Doctor of Science[33].

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[34]; theory of differential equations[13], a branch of mathematics[35]; stochastic calculus[14], a branch of mathematics[36]; mathematics[15], an academic discipline[37]; mathematical analysis[16], an academic discipline[38]; and stochastic process[17], a mathematical concept[39]. Employers include Nagoya University[18], a national university[40], in Japan[41], founded in 1939[42], headquartered in Nagoya[43]; Kyoto University[19], a national university[44], in Japan[45], founded in 1897[46], headquartered in Kyoto[47]; Institute for Advanced Study[20], a research institute[48], in United States[49], founded in 1930[50], headquartered in Princeton[51]; Aarhus University[21], a public university[52], in Denmark[53], founded in 1928[54], headquartered in Aarhus[55]; Cornell University[22], a private university[56], in United States[57], founded in 1865[58], headquartered in Ithaca[59]; and Gakushuin University[23], a university[60], in Japan[61], founded in 1949[62], headquartered in Toshima[63]. Doctoral students include Shinzō Watanabe[64], Murali Rao[65], Takeyuki Hida[66], Roy King[67], Makiko Nisio[68], and Q102136743[69].

Works and Contributions

Notable works include Itō's lemma[27], Itō calculus[70], Itô–Nisio theorem[71], Itō isometry[72], and Itō diffusion[73]. Things named for Kiyoshi Itō include Itō's lemma[74], a theorem[75]; Itō calculus[76], a mathematical concept[77]; and Ito Prize[78], a science award[79], founded in 2003[80].

Recognition

Awards received include Imperial Prize of Japan Academy[81], an academic award[82], in Japan[83], founded in 1911[84]; Asahi Prize[85], an award[86], in Japan[87], founded in 1929[88]; doctor honoris causa from the Pierre and Marie Curie University[89]; Wolf Prize in Mathematics[90]; Kyoto Prize in Basic Sciences[91]; and Person of Cultural Merit[92].

Death and Burial

Kiyoshi Itō died on November 10, 2008[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 (3,303 views/month, #7,176 of 1,000,298).[9] He has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[93] He is known by 61 alternative names across languages and contexts.[94]

Entities named for him include Itō's lemma[74], a theorem[75]; Itō calculus[76], a mathematical concept[77]; and Ito Prize[78], a science award[79], founded in 2003[80].

His notable doctoral advisees include Shinzō Watanabe[95], a mathematician[96], b. 1935[97], of Japan[98], awarded the doctor honoris causa from the Pierre and Marie Curie University[99], specialised in mathematics[100].

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[81], Asahi Prize[85], doctor honoris causa from the Pierre and Marie Curie University[89], and Wolf Prize in Mathematics[90].

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. [81] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  23. [85] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  24. [89] ↑ . Journal officiel de la République française. wikidata.org.
  25. [90] ↑ . MacTutor History of Mathematics archive. wolffund.org.il. Provenance: wikidata.org.
  26. [91] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  27. [92] ↑ . wikidata.org.
  28. [26] ↑ . wikidata.org.
  29. [64] ↑ . Mathematics Genealogy Project. wikidata.org.
  30. [65] ↑ . Mathematics Genealogy Project. wikidata.org.
  31. [66] ↑ . Mathematics Genealogy Project. wikidata.org.
  32. [67] ↑ . Mathematics Genealogy Project. wikidata.org.
  33. [68] ↑ . Mathematics Genealogy Project. wikidata.org.
  34. [69] ↑ . Mathematics Genealogy Project. wikidata.org.
  35. [32] ↑ . wikidata.org.
  36. [33] ↑ . warwick.ac.uk. warwick.ac.uk. Provenance: wikidata.org.
  37. [3] ↑ . Integrated Authority File. Retrieved . wikidata.org.
  38. [5] ↑ . Integrated Authority File. Retrieved . search.japantimes.co.jp. Provenance: wikidata.org.
  39. [27] ↑ . wikidata.org.
  40. [70] ↑ . wikidata.org.
  41. [71] ↑ . wikidata.org.
  42. [72] ↑ . wikidata.org.
  43. [73] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [95] ↑ . wikidata.org. → on this site
  2. [74] ↑ . wikidata.org. → on this site
  3. [76] ↑ . wikidata.org. → on this site
  4. [78] ↑ . 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. [34] ↑ . Wikidata. wikidata.org. → on this site
  6. [35] ↑ . Wikidata. wikidata.org. → on this site
  7. [36] ↑ . Wikidata. wikidata.org. → on this site
  8. [37] ↑ . Wikidata. wikidata.org. → on this site
  9. [38] ↑ . Wikidata. wikidata.org. → on this site
  10. [39] ↑ . Wikidata. wikidata.org. → on this site
  11. [40] ↑ . Wikidata. wikidata.org. → on this site
  12. [41] ↑ . Wikidata. wikidata.org. → on this site
  13. [42] ↑ . Wikidata. wikidata.org. → on this site
  14. [43] ↑ . Wikidata. wikidata.org. → on this site
  15. [44] ↑ . Wikidata. wikidata.org. → on this site
  16. [45] ↑ . Wikidata. wikidata.org. → on this site
  17. [46] ↑ . Wikidata. wikidata.org. → on this site
  18. [47] ↑ . Wikidata. wikidata.org. → on this site
  19. [48] ↑ . Wikidata. wikidata.org. → on this site
  20. [49] ↑ . Wikidata. wikidata.org. → on this site
  21. [50] ↑ . Wikidata. wikidata.org. → on this site
  22. [51] ↑ . Wikidata. wikidata.org. → on this site
  23. [52] ↑ . Wikidata. wikidata.org. → on this site
  24. [53] ↑ . Wikidata. wikidata.org. → on this site
  25. [54] ↑ . Wikidata. wikidata.org. → on this site
  26. [55] ↑ . Wikidata. wikidata.org. → on this site
  27. [56] ↑ . Wikidata. wikidata.org. → on this site
  28. [57] ↑ . Wikidata. wikidata.org. → on this site
  29. [58] ↑ . Wikidata. wikidata.org. → on this site
  30. [59] ↑ . Wikidata. wikidata.org. → on this site
  31. [60] ↑ . Wikidata. wikidata.org. → on this site
  32. [61] ↑ . Wikidata. wikidata.org. → on this site
  33. [62] ↑ . Wikidata. wikidata.org. → on this site
  34. [63] ↑ . Wikidata. wikidata.org. → on this site
  35. [82] ↑ . Wikidata. wikidata.org. → on this site
  36. [83] ↑ . Wikidata. wikidata.org. → on this site
  37. [84] ↑ . Wikidata. wikidata.org. → on this site
  38. [86] ↑ . Wikidata. wikidata.org. → on this site
  39. [87] ↑ . Wikidata. wikidata.org. → on this site
  40. [88] ↑ . Wikidata. wikidata.org. → on this site
  41. [96] ↑ . Wikidata. wikidata.org. → on this site
  42. [97] ↑ . Wikidata. wikidata.org. → on this site
  43. [98] ↑ . Wikidata. wikidata.org. → on this site
  44. [99] ↑ . Wikidata. wikidata.org. → on this site
  45. [100] ↑ . Wikidata. wikidata.org. → on this site
  46. [75] ↑ . Wikidata. wikidata.org. → on this site
  47. [77] ↑ . Wikidata. wikidata.org. → on this site
  48. [79] ↑ . Wikidata. wikidata.org. → on this site
  49. [80] ↑ . 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. [93] ↑ . Wikidata sitelinks. wikidata.org.
  3. [94] ↑ . 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 October 10, 2026, from https://4ort.xyz/entity/kiyoshi-ito
MLA “Kiyoshi Itō.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Oct. 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: 2026-10-10}}
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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. 14d ago · Redpandacat · 2026-09-27 view diff on Wikidata ↗
    Wikipedia languages → ['ar', 'arz', 'azb', 'be', 'ca', 'cdo', 'commons', 'cs', 'da', 'de', 'el', 'en',
    Award received → Imperial Prize of Japan Academy, Asahi Prize, doctor honoris causa from the Pierre and Marie Curie University +7
    Academic degree → Doctor of Philosophy, Doctor of Science
    Claims rich → —
    "/* wbcreateclaim-create:1| */ [[Property:P512]]: [[Q2248352]], #quickstatements; #temporary_batch_1790487654920"
  2. 5w ago · Thoasp · 2026-09-06 view diff on Wikidata ↗
    Award received → Imperial Prize of Japan Academy, Asahi Prize, doctor honoris causa from the Pierre and Marie Curie University +7
    "/* wbsetclaim-create:2||1 */ [[Property:P166]]: [[Q18339155]]"
  3. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 3au4z0
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  4. 23w 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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