Thomas Clausen

Danish mathematician and astronomer (1801–1885)
Person human Q541571
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Thomas Clausen

Summary

Thomas Clausen is a human[1]. His place of birth was Sønderborg[2]. He was born on January 16, 1801[3]. He died in Tartu[4]. He died on May 24, 1885[5]. He worked as a mathematician[6] and astronomer[7]. He has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[8]

Key Facts

  • Born in Sønderborg[2], Thomas Clausen…
  • Thomas Clausen was born in Øster Snogbæk[9].
  • Thomas Clausen died in Tartu[4].
  • Thomas Clausen was born on January 16, 1801[3].
  • Thomas Clausen died on May 24, 1885[5].
  • Thomas Clausen died on May 23, 1885[10].
  • Burial took place at Raadi cemetery[11].
  • Thomas Clausen held citizenship in Duchy of Schleswig[12].
  • Thomas Clausen worked as a mathematician[6].
  • Thomas Clausen's professions included astronomer[7].
  • Thomas Clausen's field of work was mathematics[13].
  • Thomas Clausen's field of work was astronomy[14].
  • Among Thomas Clausen's employers was Imperial University of Dorpat[15].
  • Thomas Clausen was employed by Altona Observatory[16].
  • Among Thomas Clausen's employers was Utzschneider Optical Institute[17].
  • A notable work attributed to Thomas Clausen is Bestimmung der Bahn des Cometen von 1770[18].
  • A notable work attributed to Thomas Clausen is Clausen's formula[19].
  • A notable work attributed to Thomas Clausen is Von Staudt–Clausen theorem[20].
  • A notable work attributed to Thomas Clausen is Clausen function[21].
  • Thomas Clausen received the honorary doctor of the University of Königsberg[22].
  • Thomas Clausen was a member of Göttingen Academy of Sciences and Humanities in Lower Saxony[23].
  • Thomas Clausen is recorded as male[24].
  • Thomas Clausen's instance of is recorded as human[25].
  • Thomas Clausen supervised Ludwig Schwarz as a doctoral student[26].
  • Thomas Clausen's Commons category is recorded as Thomas Clausen (astronomer, 1801)[27].

Body

Origins and Family

Recorded place of birth include Sønderborg[2], a city[28], in Denmark[29] and Øster Snogbæk[9], a village[30], in Denmark[31]. Thomas Clausen was born on January 16, 1801[3].

Education

Thomas Clausen studied under Heinrich Christian Schumacher[32].

Career and Affiliations

Recorded occupations include mathematician[6] and astronomer[7]. Fields of work include mathematics[13], an academic discipline[33] and astronomy[14], a branch of science[34]. Employers include Imperial University of Dorpat[15], an imperial universities of the Russian Empire[35], in Russian Empire[36], founded in 1803[37], headquartered in Tartu[38]; Altona Observatory[16], an astronomical observatory[39], in Germany[40]; and Utzschneider Optical Institute[17], an enterprise[41], in Germany[42], headquartered in Benediktbeuern[43]. Thomas Clausen supervised Ludwig Schwarz as a doctoral student[26].

Works and Contributions

Notable works include Bestimmung der Bahn des Cometen von 1770[18]; Clausen's formula[19], a mathematical concept[44]; Von Staudt–Clausen theorem[20], a theorem[45]; and Clausen function[21]. Things named for Thomas Clausen include Clausen's formula[46], a mathematical concept[47].

Recognition

Thomas Clausen received the honorary doctor of the University of Königsberg[22].

Death and Burial

Recorded date of death include May 24, 1885[5] and May 23, 1885[10]. Thomas Clausen died in Tartu[4]. He is buried at Raadi cemetery[11].

Why It Matters

Thomas Clausen has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[8] He is known by 4 alternative names across languages and contexts.[48]

He is credited with the discovery of Clausen function[49]. Entities named for him include Clausen's formula[46], a mathematical concept[47].

His notable doctoral advisees include Ludwig Schwarz[50], an astronomer[51], 1822–1894[52], of Russian Empire[53], awarded the Constantin Medal[54], specialised in astronomy[55].

FAQs

Where was Thomas Clausen born?

Thomas Clausen was born in Sønderborg[2].

Where did Thomas Clausen die?

Thomas Clausen passed away in Tartu[4].

What did Thomas Clausen do for work?

Thomas Clausen worked as mathematician[6] and astronomer[7].

What awards did Thomas Clausen receive?

Honors received include honorary doctor of the University of Königsberg[22].

What did Thomas Clausen discover?

Thomas Clausen is credited as discoverer of Clausen function[49].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [9] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  3. [4] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  4. [24] ↑ . Integrated Authority File. Retrieved . wikidata.org.
  5. [12] ↑ . wikidata.org.
  6. [25] ↑ . wikidata.org.
  7. [13] ↑ . wikidata.org.
  8. [14] ↑ . wikidata.org.
  9. [6] ↑ . wikidata.org.
  10. [7] ↑ . wikidata.org.
  11. [15] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  12. [16] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  13. [17] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  14. [11] ↑ . Find a Grave. gis.tartulv.ee. Provenance: wikidata.org.
  15. [22] ↑ . wikidata.org.
  16. [26] ↑ . wikidata.org.
  17. [27] ↑ . wikidata.org.
  18. [23] ↑ . wikidata.org.
  19. [3] ↑ . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  20. [5] ↑ . dml.cz. dml.cz. Provenance: wikidata.org.
  21. [10] ↑ . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  22. [18] ↑ . wikidata.org.
  23. [19] ↑ . wikidata.org.
  24. [20] ↑ . wikidata.org.
  25. [21] ↑ . wikidata.org.
  26. [32] ↑ . MacTutor History of Mathematics archive. wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [49] ↑ . wikidata.org. → on this site
  2. [50] ↑ . wikidata.org. → on this site
  3. [46] ↑ . 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. [33] ↑ . Wikidata. wikidata.org. → on this site
  6. [34] ↑ . Wikidata. wikidata.org. → on this site
  7. [35] ↑ . Wikidata. wikidata.org. → on this site
  8. [36] ↑ . Wikidata. wikidata.org. → on this site
  9. [37] ↑ . Wikidata. wikidata.org. → on this site
  10. [38] ↑ . Wikidata. wikidata.org. → on this site
  11. [39] ↑ . Wikidata. wikidata.org. → on this site
  12. [40] ↑ . Wikidata. wikidata.org. → on this site
  13. [41] ↑ . Wikidata. wikidata.org. → on this site
  14. [42] ↑ . Wikidata. wikidata.org. → on this site
  15. [43] ↑ . Wikidata. wikidata.org. → on this site
  16. [44] ↑ . Wikidata. wikidata.org. → on this site
  17. [45] ↑ . Wikidata. wikidata.org. → on this site
  18. [51] ↑ . Wikidata. wikidata.org. → on this site
  19. [52] ↑ . Wikidata. wikidata.org. → on this site
  20. [53] ↑ . Wikidata. wikidata.org. → on this site
  21. [54] ↑ . Wikidata. wikidata.org. → on this site
  22. [55] ↑ . Wikidata. wikidata.org. → on this site
  23. [47] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [8] ↑ . Wikidata sitelinks. wikidata.org.
  2. [48] ↑ . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Thomas Clausen. Retrieved April 10, 2026, from https://4ort.xyz/entity/thomas-clausen
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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 · Mastrocom · 2026-08-14 view diff on Wikidata ↗
    Sex or gender → male
    Award received → honorary doctor of the University of Königsberg
    Field of work → mathematics, astronomy
    Notable work → Bestimmung der Bahn des Cometen von 1770, Clausen's formula, Von Staudt–Clausen theorem +1
    + 25 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-statements-multiple-properties-update:0||2 */ Cleanup: remove wikimedia refs ([[User:Difool/WikidataCleanup]])"
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