Kenkichi Iwasawa

Japanese mathematician (1917-1998)
Person human Q933692
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Kenkichi Iwasawa

Summary

Kenkichi Iwasawa is a human[1]. Born in Kiryū[2], he… he was born on September 11, 1917[3]. He died in Tokyo[4]. He died on October 26, 1998[5]. He worked as a mathematician[6] and university teacher[7]. He has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[8]

Key Facts

  • Kenkichi Iwasawa's place of birth was Kiryū[2].
  • Kenkichi Iwasawa died in Tokyo[4].
  • Kenkichi Iwasawa was born on September 11, 1917[3].
  • Kenkichi Iwasawa died on October 26, 1998[5].
  • Kenkichi Iwasawa held citizenship in Japan[9].
  • Kenkichi Iwasawa held citizenship in Empire of Japan[10].
  • Kenkichi Iwasawa's professions included mathematician[6].
  • Kenkichi Iwasawa worked as a university teacher[7].
  • Kenkichi Iwasawa's field of work was number theory[11].
  • Kenkichi Iwasawa's field of work was group theory[12].
  • Kenkichi Iwasawa was employed by Princeton University[13].
  • Kenkichi Iwasawa was employed by Massachusetts Institute of Technology[14].
  • Kenkichi Iwasawa was employed by University of Tokyo[15].
  • Kenkichi Iwasawa was employed by Institute for Advanced Study[16].
  • Kenkichi Iwasawa was educated at University of Tokyo[17].
  • Kenkichi Iwasawa was educated at Musashi Junior & Senior High School[18].
  • Kenkichi Iwasawa's doctoral advisor was Shokichi Iyanaga[19].
  • A notable work attributed to Kenkichi Iwasawa is Iwasawa theory[20].
  • A notable work attributed to Kenkichi Iwasawa is Iwasawa decomposition[21].
  • A notable work attributed to Kenkichi Iwasawa is Iwasawa algebra[22].
  • A notable work attributed to Kenkichi Iwasawa is Iwasawa group[23].
  • A notable work attributed to Kenkichi Iwasawa is Iwasawa manifold[24].
  • A notable work attributed to Kenkichi Iwasawa is main conjecture of Iwasawa theory[25].
  • Kenkichi Iwasawa received the Guggenheim Fellowship[26].
  • Kenkichi Iwasawa received the Cole Prize in Number Theory[27].

Body

Origins and Family

Kenkichi Iwasawa's place of birth was Kiryū[2]. He was born on September 11, 1917[3].

Education

Educated at University of Tokyo[17], a research university[28], in Japan[29], founded in 1877[30], headquartered in Hongō campus[31] and Musashi Junior & Senior High School[18], an unified secondary school in Japan[32], in Japan[33], founded in 1922[34]. Kenkichi Iwasawa's doctoral advisor was Shokichi Iyanaga[19].

Career and Affiliations

Recorded occupations include mathematician[6] and university teacher[7]. Fields of work include number theory[11], a branch of mathematics[35] and group theory[12], a branch of mathematics[36]. Employers include Princeton University[13], a private university[37], in United States[38], founded in 1746[39], headquartered in Princeton[40]; Massachusetts Institute of Technology[14], a university[41], in United States[42], founded in 1861[43], headquartered in Cambridge[44]; University of Tokyo[15], a research university[45], in Japan[46], founded in 1877[47], headquartered in Hongō campus[48]; and Institute for Advanced Study[16], a research institute[49], in United States[50], founded in 1930[51], headquartered in Princeton[52]. Doctoral students include Robert F. Coleman[53], a mathematician[54], 1954–2014[55], of United States[56], awarded the MacArthur Fellows Program[57], specialised in mathematics[58]; Ralph Greenberg[59], a mathematician[60], b. 1944[61], of United States[62], awarded the Fellow of the American Mathematical Society[63], specialised in mathematics[64]; Yasutaka Ihara[65], a mathematician[66], b. 1938[67], of Japan[68], awarded the The Order of the Sacred Treasure, Gold Rays with Neck Ribbon[69]; Eugene M. Luks[70], a mathematician[71], b. 1940[72], of United States[73], awarded the Fellow of the American Mathematical Society[74], specialised in graph theory[75]; Gustave Solomon[76]; and Lawrence C. Washington[77].

Works and Contributions

Notable works include Iwasawa theory[20], Iwasawa decomposition[21], Iwasawa algebra[22], Iwasawa group[23], Iwasawa manifold[24], and main conjecture of Iwasawa theory[25]. Things named for Kenkichi Iwasawa include Iwasawa decomposition[78], a Lie group decomposition[79] and Iwasawa theory[80].

Recognition

Awards received include Guggenheim Fellowship[26], a fellowship grant[81], in United States[82], founded in 1925[83]; Cole Prize in Number Theory[27], a science award[84], founded in 1931[85]; Asahi Prize[86], an award[87], in Japan[88], founded in 1929[89]; Fujihara Award[90], a science award[91], in Japan[92], founded in 1959[93]; and Japan Academy Prize[94], an academic award[95], in Japan[96], founded in 1948[97].

Death and Burial

Kenkichi Iwasawa died on October 26, 1998[5]. He passed away in Tokyo[4]. The cause of death was pneumonia[98].

Why It Matters

Kenkichi Iwasawa has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[8] He is known by 3 alternative names across languages and contexts.[99]

Entities named for him include Iwasawa decomposition[78], a Lie group decomposition[79] and Iwasawa theory[80].

His notable doctoral advisees include Gustave Solomon[100], a mathematician[101], 1930–1996[102], of United States[103], awarded the IEEE Masaru Ibuka Consumer Electronics Award[104]; Robert F. Coleman[105], a mathematician[106], 1954–2014[107], of United States[108], awarded the MacArthur Fellows Program[109], specialised in mathematics[110]; Ralph Greenberg[111], a mathematician[112], b. 1944[113], of United States[114], awarded the Fellow of the American Mathematical Society[115], specialised in mathematics[116]; Eugene M. Luks[117], a mathematician[118], b. 1940[119], of United States[120], awarded the Fellow of the American Mathematical Society[121], specialised in graph theory[122]; John H. Smith[123], a mathematician[124], b. 2000[125], of United States[126], specialised in graph theory[127]; and Yasutaka Ihara[128], a mathematician[129], b. 1938[130], of Japan[131], awarded the The Order of the Sacred Treasure, Gold Rays with Neck Ribbon[132].

FAQs

Where was Kenkichi Iwasawa born?

Kenkichi Iwasawa's place of birth was Kiryū[2].

Where did Kenkichi Iwasawa die?

Kenkichi Iwasawa died in Tokyo[4].

What did Kenkichi Iwasawa do for work?

Kenkichi Iwasawa worked as mathematician[6] and university teacher[7].

Where did Kenkichi Iwasawa go to school?

Kenkichi Iwasawa was educated at University of Tokyo[17] and Musashi Junior & Senior High School[18].

What awards did Kenkichi Iwasawa receive?

Honors received include Guggenheim Fellowship[26], Cole Prize in Number Theory[27], Asahi Prize[86], and Fujihara Award[90].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . MacTutor History of Mathematics archive. wikidata.org.
  3. [9] . wikidata.org.
  4. [10] . wikidata.org.
  5. [17] . MacTutor History of Mathematics archive. wikidata.org.
  6. [18] . MacTutor History of Mathematics archive. wikidata.org.
  7. [11] . wikidata.org.
  8. [12] . smf.emath.fr. smf.emath.fr. Provenance: wikidata.org.
  9. [6] . wikidata.org.
  10. [7] . wikidata.org.
  11. [13] . MacTutor History of Mathematics archive. wikidata.org.
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  13. [15] . MacTutor History of Mathematics archive. wikidata.org.
  14. [16] . MacTutor History of Mathematics archive. ias.edu. Provenance: wikidata.org.
  15. [26] . wikidata.org.
  16. [27] . MacTutor History of Mathematics archive. wikidata.org.
  17. [86] . wikidata.org.
  18. [90] . wikidata.org.
  19. [94] . MacTutor History of Mathematics archive. wikidata.org.
  20. [19] . wikidata.org.
  21. [53] . Mathematics Genealogy Project. wikidata.org.
  22. [59] . Mathematics Genealogy Project. wikidata.org.
  23. [65] . Mathematics Genealogy Project. wikidata.org.
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  26. [77] . Mathematics Genealogy Project. wikidata.org.
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  28. [3] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  29. [5] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  30. [20] . wikidata.org.
  31. [21] . wikidata.org.
  32. [22] . wikidata.org.
  33. [23] . wikidata.org.
  34. [24] . wikidata.org.
  35. [25] . wikidata.org.

Inverse relationships (entities pointing at this one)

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Class ancestry

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

Aggregate / graph-position facts

  1. [8] . Wikidata sitelinks. wikidata.org.
  2. [99] . Wikidata aliases. wikidata.org.

📑 Cite this page

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). Kenkichi Iwasawa. Retrieved April 10, 2026, from https://4ort.xyz/entity/kenkichi-iwasawa
MLA “Kenkichi Iwasawa.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/kenkichi-iwasawa.
BibTeX @misc{4ortxyz_kenkichi-iwasawa_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Kenkichi Iwasawa}}, year = {2026}, url = {https://4ort.xyz/entity/kenkichi-iwasawa}, 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. 6w ago · Iamcarbon · 2026-08-05 view diff on Wikidata ↗
    Place of birth Kiryū
    Employer Princeton University, Massachusetts Institute of Technology, University of Tokyo +1
    Educated at University of Tokyo, Musashi Junior & Senior High School
    Sex or gender male
    + 26 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||ca, ja, mul */ Remove duplicate birth name aliases"
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