William Kahan

Canadian mathematician and computer scientist (born 1933)
Person human Q92782
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William Kahan

Summary

William Kahan is a human[1]. Born in Toronto[2], he… he was born on June 5, 1933[3]. He worked as a mathematician[4], computer scientist[5], and university teacher[6]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (262 views/month, #7,242 of 1,000,298).[7]

Key Facts

  • Born in Toronto[2], William Kahan…
  • William Kahan was born on June 5, 1933[3].
  • William Kahan held citizenship in Canada[8].
  • William Kahan's professions included mathematician[4].
  • William Kahan's professions included computer scientist[5].
  • William Kahan's professions included university teacher[6].
  • Among William Kahan's employers was University of California, Berkeley[9].
  • William Kahan was employed by Adalia Ltd.[10].
  • William Kahan's education included a stint at University of Toronto[11].
  • William Kahan's doctoral advisor was Byron Alexander Griffith[12].
  • A notable work attributed to William Kahan is IEEE 754[13].
  • A notable work attributed to William Kahan is Davis-Kahan Theorem[14].
  • William Kahan received the Turing Award[15].
  • William Kahan received the IEEE Emanuel R. Piore Award[16].
  • William Kahan received the ACM Fellow[17].
  • William Kahan received the honorary doctorate from the University of Waterloo[18].
  • William Kahan was a member of American Academy of Arts and Sciences[19].
  • William Kahan was a member of Association for Computing Machinery[20].
  • William Kahan is recorded as male[21].
  • William Kahan's instance of is recorded as human[22].
  • William Kahan supervised James Demmel as a doctoral student[23].
  • William Kahan supervised Deb Kumar Nag Chowdhury as a doctoral student[24].
  • William Kahan supervised Jerome Toby Coonen as a doctoral student[25].
  • William Kahan supervised Pingtak Peter Tang as a doctoral student[26].
  • William Kahan supervised Ren-Cang Li as a doctoral student[27].

Body

Origins and Family

William Kahan's place of birth was Toronto[2]. He was born on June 5, 1933[3].

Education

William Kahan was educated at University of Toronto[11]. His doctoral advisor was Byron Alexander Griffith[12].

Career and Affiliations

Recorded occupations include mathematician[4], computer scientist[5], and university teacher[6]. Employers include University of California, Berkeley[9], a public research university[28], in United States[29], founded in 1868[30], headquartered in Berkeley[31] and Adalia Ltd.[10]. Doctoral students include James Demmel[23], a mathematician[32], b. 1955[33], of United States[34], awarded the Paris Kanellakis Award[35], specialised in mathematician[36]; Deb Kumar Nag Chowdhury[24]; Jerome Toby Coonen[25]; Pingtak Peter Tang[26]; Ren-Cang Li[27]; and Scott B. Baden[37], a computer scientist[38].

Works and Contributions

Notable works include IEEE 754[13] and Davis-Kahan Theorem[14], a theorem[39]. Things named for William Kahan include Kahan summation algorithm[40], an algorithm[41].

Recognition

Awards received include Turing Award[15], a science award[42], in United States[43], founded in 1966[44]; IEEE Emanuel R. Piore Award[16], a technical field award[45], founded in 1976[46]; ACM Fellow[17], a fellowship award[47]; and honorary doctorate from the University of Waterloo[18], an award[48], in Canada[49].

Why It Matters

William Kahan ranks in the top 0.72% of human entities by monthly Wikipedia readership (262 views/month, #7,242 of 1,000,298).[7] He has Wikipedia articles in 18 language editions, a strong signal of global cultural recognition.[50] He is known by 17 alternative names across languages and contexts.[51]

He is credited with the discovery of Kahan summation algorithm[52], an algorithm[53]. Entities named for him include Kahan summation algorithm[40], an algorithm[41].

His notable doctoral advisees include James Demmel[54], a mathematician[55], b. 1955[56], of United States[57], awarded the Paris Kanellakis Award[58], specialised in mathematician[59] and Scott B. Baden[60], a computer scientist[61].

FAQs

Where was William Kahan born?

William Kahan was born in Toronto[2].

What did William Kahan do for work?

William Kahan worked as mathematician[4], computer scientist[5], and university teacher[6].

Where did William Kahan go to school?

William Kahan was educated at University of Toronto[11].

What awards did William Kahan receive?

Honors received include Turing Award[15], IEEE Emanuel R. Piore Award[16], ACM Fellow[17], and honorary doctorate from the University of Waterloo[18].

What did William Kahan discover?

William Kahan is credited as discoverer of Kahan summation algorithm[52].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [21] . wikidata.org.
  3. [8] . wikidata.org.
  4. [22] . wikidata.org.
  5. [11] . wikidata.org.
  6. [4] . wikidata.org.
  7. [5] . wikidata.org.
  8. [6] . wikidata.org.
  9. [9] . wikidata.org.
  10. [10] . people.eecs.berkeley.edu. people.eecs.berkeley.edu. Provenance: wikidata.org.
  11. [15] . amturing.acm.org. amturing.acm.org. Provenance: wikidata.org.
  12. [16] . ieee.org. ieee.org. Provenance: wikidata.org.
  13. [17] . awards.acm.org. awards.acm.org. Provenance: wikidata.org.
  14. [18] . people.eecs.berkeley.edu. people.eecs.berkeley.edu. Provenance: wikidata.org.
  15. [12] . Mathematics Genealogy Project. wikidata.org.
  16. [23] . wikidata.org.
  17. [24] . Mathematics Genealogy Project. wikidata.org.
  18. [25] . Mathematics Genealogy Project. wikidata.org.
  19. [26] . Mathematics Genealogy Project. wikidata.org.
  20. [27] . Mathematics Genealogy Project. wikidata.org.
  21. [37] . Mathematics Genealogy Project. wikidata.org.
  22. [19] . wikidata.org.
  23. [20] . awards.acm.org. Retrieved . awards.acm.org. Provenance: wikidata.org.
  24. [3] . amturing.acm.org. amturing.acm.org. Provenance: wikidata.org.
  25. [13] . wikidata.org.
  26. [14] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [52] . wikidata.org. → on this site
  2. [54] . wikidata.org. → on this site
  3. [60] . wikidata.org. → on this site
  4. [40] . 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. [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. [46] . Wikidata. wikidata.org. → on this site
  10. [47] . Wikidata. wikidata.org. → on this site
  11. [48] . Wikidata. wikidata.org. → on this site
  12. [49] . 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. [38] . Wikidata. wikidata.org. → on this site
  19. [39] . Wikidata. wikidata.org. → on this site
  20. [53] . Wikidata. wikidata.org. → on this site
  21. [55] . Wikidata. wikidata.org. → on this site
  22. [56] . Wikidata. wikidata.org. → on this site
  23. [57] . Wikidata. wikidata.org. → on this site
  24. [58] . Wikidata. wikidata.org. → on this site
  25. [59] . Wikidata. wikidata.org. → on this site
  26. [61] . Wikidata. wikidata.org. → on this site
  27. [41] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [7] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [50] . Wikidata sitelinks. wikidata.org.
  3. [51] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). William Kahan. Retrieved March 9, 2026, from https://4ort.xyz/entity/william-kahan
MLA “William Kahan.” 4ort.xyz Knowledge Graph, 4ort.xyz, 9 Mar. 2026, https://4ort.xyz/entity/william-kahan.
BibTeX @misc{4ortxyz_william-kahan_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{William Kahan}}, year = {2026}, url = {https://4ort.xyz/entity/william-kahan}, note = {Accessed: 2026-03-09}}
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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. 5w ago · Pescan · 2026-06-07 view diff on Wikidata ↗
    Sex or gender
    Mr author id
    Awards & winners artist id
    Country of citizenship Canada
    + 64 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P8669]]: kahan-william-morton"
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