Yasutaka Ihara

Japanese mathematician
Person human Q1747132
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Yasutaka Ihara

Summary

Yasutaka Ihara is a human[1]. Born in Tokyo[2], he… he was born on May 3, 1938[3]. He worked as a mathematician[4] and university teacher[5]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (51 views/month, #7,296 of 1,000,298).[6]

Key Facts

  • Yasutaka Ihara's place of birth was Tokyo[2].
  • Yasutaka Ihara was born on May 3, 1938[3].
  • Yasutaka Ihara held citizenship in Japan[7].
  • Yasutaka Ihara's professions included mathematician[4].
  • Yasutaka Ihara worked as a university teacher[5].
  • Among Yasutaka Ihara's employers was University of Tokyo[8].
  • Among Yasutaka Ihara's employers was Kyoto University[9].
  • Yasutaka Ihara's education included a stint at University of Tokyo[10].
  • Yasutaka Ihara's doctoral advisor was Shokichi Iyanaga[11].
  • Yasutaka Ihara's doctoral advisor was Kenkichi Iwasawa[12].
  • Yasutaka Ihara received the The Order of the Sacred Treasure, Gold Rays with Neck Ribbon[13].
  • Yasutaka Ihara is recorded as male[14].
  • Yasutaka Ihara's instance of is recorded as human[15].
  • Yasutaka Ihara supervised Kazuya Kato as a doctoral student[16].
  • Yasutaka Ihara supervised Ki-ichiro Hashimoto as a doctoral student[17].
  • Yasutaka Ihara supervised Tomoyoshi Ibukiyama as a doctoral student[18].
  • Yasutaka Ihara supervised Masanobu Kaneko as a doctoral student[19].
  • Yasutaka Ihara supervised Shūji Saitō as a doctoral student[20].
  • Yasutaka Ihara supervised Tsuneo Arakawa as a doctoral student[21].
  • Yasutaka Ihara supervised Takayuki Oda as a doctoral student[22].
  • Yasutaka Ihara supervised Hiroaki Nakamura as a doctoral student[23].
  • Yasutaka Ihara supervised Shoichi Nakajima as a doctoral student[24].
  • Yasutaka Ihara supervised Takashi Ichikawa as a doctoral student[25].
  • Yasutaka Ihara supervised Masami Ohta as a doctoral student[26].
  • Yasutaka Ihara supervised Tadashi Yamazaki as a doctoral student[27].

Body

Origins and Family

Yasutaka Ihara's place of birth was Tokyo[2]. He was born on May 3, 1938[3].

Education

Yasutaka Ihara's education included a stint at University of Tokyo[10]. Doctoral advisors include Shokichi Iyanaga[11], a mathematician[28], 1906–2006[29], of Japan[30], awarded the Order of the Rising Sun, 2nd class[31], specialised in topology[32] and Kenkichi Iwasawa[12], a mathematician[33], 1917–1998[34], of Japan[35], awarded the Guggenheim Fellowship[36], specialised in number theory[37].

Career and Affiliations

Recorded occupations include mathematician[4] and university teacher[5]. Employers include University of Tokyo[8], a research university[38], in Japan[39], founded in 1877[40], headquartered in Hongō campus[41] and Kyoto University[9], a national university[42], in Japan[43], founded in 1897[44], headquartered in Kyoto[45]. Doctoral students include Kazuya Kato[16], a mathematician[46], b. 1952[47], of Japan[48], awarded the Fellow of the American Academy of Arts and Sciences[49], specialised in number theory[50]; Ki-ichiro Hashimoto[17]; Tomoyoshi Ibukiyama[18], a mathematician[51], awarded the Algebra Award[52]; Masanobu Kaneko[19], a mathematician[53]; Shūji Saitō[20], a mathematician[54], b. 1957[55], of Japan[56]; and Tsuneo Arakawa[21].

Recognition

Yasutaka Ihara received the The Order of the Sacred Treasure, Gold Rays with Neck Ribbon[13].

Works and Contributions

Things named for Yasutaka Ihara include Ihara zeta function[57], a special function[58].

Why It Matters

Yasutaka Ihara ranks in the top 0.73% of human entities by monthly Wikipedia readership (51 views/month, #7,296 of 1,000,298).[6] He has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[59]

He is credited with the discovery of Ihara zeta function[60], a special function[61]. Entities named for him include Ihara zeta function[57], a special function[58].

His notable doctoral advisees include Kazuya Kato[62], a mathematician[63], b. 1952[64], of Japan[65], awarded the Fellow of the American Academy of Arts and Sciences[66], specialised in number theory[67].

FAQs

Where was Yasutaka Ihara born?

Yasutaka Ihara was born in Tokyo[2].

What did Yasutaka Ihara do for work?

Yasutaka Ihara worked as mathematician[4] and university teacher[5].

Where did Yasutaka Ihara go to school?

Yasutaka Ihara was educated at University of Tokyo[10].

What awards did Yasutaka Ihara receive?

Honors received include The Order of the Sacred Treasure, Gold Rays with Neck Ribbon[13].

What did Yasutaka Ihara discover?

Yasutaka Ihara is credited as discoverer of Ihara zeta function[60].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [14] . wikidata.org.
  3. [7] . wikidata.org.
  4. [15] . wikidata.org.
  5. [10] . wikidata.org.
  6. [4] . wikidata.org.
  7. [5] . wikidata.org.
  8. [8] . wikidata.org.
  9. [9] . Retrieved . wikidata.org.
  10. [13] . wikidata.org.
  11. [11] . Mathematics Genealogy Project. wikidata.org.
  12. [12] . Mathematics Genealogy Project. wikidata.org.
  13. [16] . wikidata.org.
  14. [17] . Mathematics Genealogy Project. wikidata.org.
  15. [18] . Mathematics Genealogy Project. wikidata.org.
  16. [19] . Mathematics Genealogy Project. wikidata.org.
  17. [20] . Mathematics Genealogy Project. wikidata.org.
  18. [21] . Mathematics Genealogy Project. wikidata.org.
  19. [22] . Mathematics Genealogy Project. wikidata.org.
  20. [23] . Mathematics Genealogy Project. wikidata.org.
  21. [24] . Mathematics Genealogy Project. wikidata.org.
  22. [25] . Mathematics Genealogy Project. wikidata.org.
  23. [26] . Mathematics Genealogy Project. wikidata.org.
  24. [27] . Mathematics Genealogy Project. wikidata.org.
  25. [3] . Integrated Authority File. Retrieved . kotobank.jp. Provenance: wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [60] . wikidata.org. → on this site
  2. [62] . wikidata.org. → on this site
  3. [57] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [38] . Wikidata. wikidata.org. → on this site
  2. [39] . Wikidata. wikidata.org. → on this site
  3. [40] . Wikidata. wikidata.org. → on this site
  4. [41] . Wikidata. wikidata.org. → on this site
  5. [42] . Wikidata. wikidata.org. → on this site
  6. [43] . Wikidata. wikidata.org. → on this site
  7. [44] . Wikidata. wikidata.org. → on this site
  8. [45] . Wikidata. wikidata.org. → on this site
  9. [28] . Wikidata. wikidata.org. → on this site
  10. [29] . Wikidata. wikidata.org. → on this site
  11. [30] . Wikidata. wikidata.org. → on this site
  12. [31] . Wikidata. wikidata.org. → on this site
  13. [32] . Wikidata. wikidata.org. → on this site
  14. [33] . Wikidata. wikidata.org. → on this site
  15. [34] . Wikidata. wikidata.org. → on this site
  16. [35] . Wikidata. wikidata.org. → on this site
  17. [36] . Wikidata. wikidata.org. → on this site
  18. [37] . Wikidata. wikidata.org. → on this site
  19. [46] . Wikidata. wikidata.org. → on this site
  20. [47] . Wikidata. wikidata.org. → on this site
  21. [48] . Wikidata. wikidata.org. → on this site
  22. [49] . Wikidata. wikidata.org. → on this site
  23. [50] . Wikidata. wikidata.org. → on this site
  24. [51] . Wikidata. wikidata.org. → on this site
  25. [52] . Wikidata. wikidata.org. → on this site
  26. [53] . Wikidata. wikidata.org. → on this site
  27. [54] . Wikidata. wikidata.org. → on this site
  28. [55] . Wikidata. wikidata.org. → on this site
  29. [56] . Wikidata. wikidata.org. → on this site
  30. [61] . Wikidata. wikidata.org. → on this site
  31. [63] . Wikidata. wikidata.org. → on this site
  32. [64] . Wikidata. wikidata.org. → on this site
  33. [65] . Wikidata. wikidata.org. → on this site
  34. [66] . Wikidata. wikidata.org. → on this site
  35. [67] . Wikidata. wikidata.org. → on this site
  36. [58] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [6] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [59] . Wikidata sitelinks. 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). Yasutaka Ihara. Retrieved April 10, 2026, from https://4ort.xyz/entity/yasutaka-ihara
MLA “Yasutaka Ihara.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/yasutaka-ihara.
BibTeX @misc{4ortxyz_yasutaka-ihara_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Yasutaka Ihara}}, year = {2026}, url = {https://4ort.xyz/entity/yasutaka-ihara}, note = {Accessed: 2026-04-10}}
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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 · Epìdosis · 2026-05-19 view diff on Wikidata ↗
    Award received
    Place of birth Tokyo
    Citizenship
    Educated at University of Tokyo
    + 17 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/31727|batch #31727]]: import P21 and P106 from GND (20)"
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