Robert Daniel Carmichael

American mathematician (1879-1967)
Person human Q982962
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Robert Daniel Carmichael

Summary

Robert Daniel Carmichael is a human[1]. He was born in Goodwater[2]. He was born on +1879-03-01T00:00:00Z[3]. He died in Merriam[4]. He died on +1967-05-02T00:00:00Z[5]. He worked as a mathematician[6] and university teacher[7]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (15 views/month, #7,286 of 1,000,298).[8]

Key Facts

  • Robert Daniel Carmichael was born in Goodwater[2].
  • Robert Daniel Carmichael died in Merriam[4].
  • Robert Daniel Carmichael was born on +1879-03-01T00:00:00Z[3].
  • Robert Daniel Carmichael died on +1967-05-02T00:00:00Z[5].
  • Robert Daniel Carmichael is buried at Griggsville Cemetery[9].
  • Robert Daniel Carmichael held citizenship in United States[10].
  • Robert Daniel Carmichael's professions included mathematician[6].
  • Robert Daniel Carmichael worked as a university teacher[7].
  • Robert Daniel Carmichael's field of work was number theory[11].
  • Robert Daniel Carmichael's field of work was mathematics[12].
  • Robert Daniel Carmichael was employed by Indiana University[13].
  • Among Robert Daniel Carmichael's employers was University of Illinois system[14].
  • Robert Daniel Carmichael's education included a stint at Princeton University[15].
  • Robert Daniel Carmichael's doctoral advisor was George David Birkhoff[16].
  • A notable work attributed to Robert Daniel Carmichael is Carmichael number[17].
  • A notable work attributed to Robert Daniel Carmichael is Carmichael function[18].
  • A notable work attributed to Robert Daniel Carmichael is Carmichael's theorem[19].
  • A notable work attributed to Robert Daniel Carmichael is Carmichael's totient function conjecture[20].
  • Robert Daniel Carmichael was a member of Mathematical Association of America[21].
  • Robert Daniel Carmichael's image is recorded as Robert Daniel Carmichael.gif[22].
  • Robert Daniel Carmichael is recorded as male[23].
  • Robert Daniel Carmichael's instance of is recorded as human[24].
  • Robert Daniel Carmichael supervised W. T. Martin as a doctoral student[25].
  • Robert Daniel Carmichael supervised Cora Barbara Hennel as a doctoral student[26].
  • Robert Daniel Carmichael supervised Harold Meade Mott-Smith as a doctoral student[27].

Body

Origins and Family

Robert Daniel Carmichael was born in Goodwater[2]. He was born on +1879-03-01T00:00:00Z[3].

Education

Robert Daniel Carmichael was educated at Princeton University[15]. His doctoral advisor was George David Birkhoff[16].

Career and Affiliations

Recorded occupations include mathematician[6] and university teacher[7]. Fields of work include number theory[11], a branch of mathematics[28] and mathematics[12], an academic discipline[29]. Employers include Indiana University[13], a state university system[30], in United States[31], founded in 1820[32], headquartered in Bloomington[33] and University of Illinois system[14], a state university system[34], in United States[35], founded in 1867[36], headquartered in Urbana[37]. Doctoral students include W. T. Martin[25], a mathematician[38], 1911–2004[39], of United States[40], specialised in probability theory[41]; Cora Barbara Hennel[26], a university teacher[42], 1886–1947[43], of United States[44], specialised in mathematics[45]; Harold Meade Mott-Smith[27], b. 1897[46], of United States[47]; William Harold Wilson[48]; Merlin Grant Smith[49]; and Charles Francis Greene[50].

Works and Contributions

Notable works include Carmichael number[17], Carmichael function[18], Carmichael's theorem[19], and Carmichael's totient function conjecture[20]. Things named for Robert Daniel Carmichael include Carmichael number[51], a type of integer[52]; Carmichael function[53], an arithmetic function[54]; Carmichael's theorem[55], a theorem[56]; and Lucas–Carmichael number[57].

Death and Burial

Robert Daniel Carmichael died on +1967-05-02T00:00:00Z[5]. He died in Merriam[4]. Burial took place at Griggsville Cemetery[9].

Why It Matters

Robert Daniel Carmichael ranks in the top 0.73% of human entities by monthly Wikipedia readership (15 views/month, #7,286 of 1,000,298).[8] He has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[58] He is known by 6 alternative names across languages and contexts.[59]

Entities named for him include Carmichael number[51], a type of integer[52]; Carmichael function[53], an arithmetic function[54]; Carmichael's theorem[55], a theorem[56]; and Lucas–Carmichael number[57].

His notable doctoral advisees include W. T. Martin[60], a mathematician[61], 1911–2004[62], of United States[63], specialised in probability theory[64].

FAQs

Where was Robert Daniel Carmichael born?

Born in Goodwater[2], Robert Daniel Carmichael…

Where did Robert Daniel Carmichael die?

Robert Daniel Carmichael died in Merriam[4].

What did Robert Daniel Carmichael do for work?

Robert Daniel Carmichael worked as mathematician[6] and university teacher[7].

Where did Robert Daniel Carmichael go to school?

Robert Daniel Carmichael was educated at Princeton University[15].

References

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

Direct Wikidata claims

  1. [22] . wikidata.org.
  2. [2] . wikidata.org.
  3. [4] . MacTutor History of Mathematics archive. wikidata.org.
  4. [23] . Integrated Authority File. Retrieved . wikidata.org.
  5. [10] . wikidata.org.
  6. [24] . BnF authorities. Retrieved . wikidata.org.
  7. [15] . wikidata.org.
  8. [11] . wikidata.org.
  9. [12] . Czech National Authority Database. Retrieved . wikidata.org.
  10. [6] . Integrated Authority File. Retrieved . wikidata.org.
  11. [7] . Czech National Authority Database. Retrieved . wikidata.org.
  12. [13] . MacTutor History of Mathematics archive. wikidata.org.
  13. [14] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  14. [9] . Find a Grave. wikidata.org.
  15. [16] . Mathematics Genealogy Project. Retrieved . wikidata.org.
  16. [25] . Mathematics Genealogy Project. wikidata.org.
  17. [26] . Mathematics Genealogy Project. wikidata.org.
  18. [27] . Mathematics Genealogy Project. wikidata.org.
  19. [48] . Mathematics Genealogy Project. wikidata.org.
  20. [49] . Mathematics Genealogy Project. wikidata.org.
  21. [50] . Mathematics Genealogy Project. wikidata.org.
  22. [21] . maa.org. maa.org. Provenance: wikidata.org.
  23. [3] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  24. [5] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  25. [17] . wikidata.org.
  26. [18] . wikidata.org.
  27. [19] . wikidata.org.
  28. [20] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [60] . wikidata.org. → on this site
  2. [51] . wikidata.org. → on this site
  3. [53] . wikidata.org. → on this site
  4. [55] . wikidata.org. → on this site
  5. [57] . 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. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site
  7. [34] . Wikidata. wikidata.org. → on this site
  8. [35] . Wikidata. wikidata.org. → on this site
  9. [36] . Wikidata. wikidata.org. → on this site
  10. [37] . Wikidata. wikidata.org. → on this site
  11. [38] . Wikidata. wikidata.org. → on this site
  12. [39] . Wikidata. wikidata.org. → on this site
  13. [40] . Wikidata. wikidata.org. → on this site
  14. [41] . Wikidata. wikidata.org. → on this site
  15. [42] . Wikidata. wikidata.org. → on this site
  16. [43] . Wikidata. wikidata.org. → on this site
  17. [44] . Wikidata. wikidata.org. → on this site
  18. [45] . Wikidata. wikidata.org. → on this site
  19. [46] . Wikidata. wikidata.org. → on this site
  20. [47] . Wikidata. wikidata.org. → on this site
  21. [61] . Wikidata. wikidata.org. → on this site
  22. [62] . Wikidata. wikidata.org. → on this site
  23. [63] . Wikidata. wikidata.org. → on this site
  24. [64] . Wikidata. wikidata.org. → on this site
  25. [52] . Wikidata. wikidata.org. → on this site
  26. [54] . Wikidata. wikidata.org. → on this site
  27. [56] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [8] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [58] . Wikidata sitelinks. wikidata.org.
  3. [59] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Robert Daniel Carmichael. Retrieved April 10, 2026, from https://4ort.xyz/entity/robert-daniel-carmichael
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BibTeX @misc{4ortxyz_robert-daniel-carmichael_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Robert Daniel Carmichael}}, year = {2026}, url = {https://4ort.xyz/entity/robert-daniel-carmichael}, note = {Accessed: 2026-04-10}}
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