Øystein Ore

Norwegian mathematician (1899–1968)
Person human Q329846
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Øystein Ore

Summary

Øystein Ore is a human[1]. He was born in Christiania[2]. He was born on October 7, 1899[3]. He died in Oslo[4]. He died on August 13, 1968[5]. He worked as a mathematician[6], historian of mathematics[7], and university teacher[8]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (286 views/month, #7,250 of 1,000,298).[9]

Key Facts

  • Born in Christiania[2], Øystein Ore…
  • Øystein Ore was born in Oslo[10].
  • Øystein Ore passed away in Oslo[4].
  • Øystein Ore died in Bærum Municipality[11].
  • Øystein Ore was born on October 7, 1899[3].
  • Øystein Ore died on August 13, 1968[5].
  • Burial took place at Grove Street Cemetery[12].
  • Øystein Ore held citizenship in Norway[13].
  • Øystein Ore worked as a mathematician[6].
  • Øystein Ore's professions included historian of mathematics[7].
  • Øystein Ore worked as a university teacher[8].
  • Øystein Ore's field of work was combinatorics[14].
  • Øystein Ore's field of work was lattice[15].
  • Øystein Ore's field of work was mathematics[16].
  • Øystein Ore's field of work was abstract algebra[17].
  • Øystein Ore's field of work was graph theory[18].
  • Øystein Ore's field of work was number theory[19].
  • Øystein Ore held the position of Sterling Professor[20].
  • Øystein Ore was employed by Yale University[21].
  • Øystein Ore was employed by University of Oslo[22].
  • Øystein Ore was educated at University of Oslo[23].
  • Øystein Ore was educated at University of Göttingen[24].
  • Øystein Ore was educated at Oslo Cathedral School[25].
  • Øystein Ore's doctoral advisor was Thoralf Skolem[26].
  • A notable student of Øystein Ore was Grace Hopper[27].

Body

Origins and Family

Recorded place of birth include Christiania[2], a toponym[28], in Norway[29] and Oslo[10], a big city[30], in Norway[31], founded in 1048[32]. Øystein Ore was born on October 7, 1899[3].

Education

Educated at University of Oslo[23], a public university[33], in Norway[34], founded in 1811[35], headquartered in Blindern[36]; University of Göttingen[24], a campus university[37], in Germany[38], founded in 1734[39], headquartered in Göttingen[40]; and Oslo Cathedral School[25], an upper secondary school in Norway[41], in Norway[42], founded in 1153[43]. Øystein Ore's doctoral advisor was Thoralf Skolem[26]. He studied under Thoralf Skolem[44].

Career and Affiliations

Recorded occupations include mathematician[6], historian of mathematics[7], and university teacher[8]. Fields of work include combinatorics[14], a branch of mathematics[45]; lattice[15]; mathematics[16], an academic discipline[46]; abstract algebra[17], a branch of mathematics[47]; graph theory[18], an academic discipline[48]; and number theory[19], a branch of mathematics[49]. Employers include Yale University[21], a private university[50], in United States[51], founded in 1701[52], headquartered in New Haven[53] and University of Oslo[22], a public university[54], in Norway[55], founded in 1811[56], headquartered in Blindern[57]. Øystein Ore held the position of Sterling Professor[20]. A notable student of him was Grace Hopper[27]. Doctoral students include Grace Hopper[58], a mathematician[59], 1906–1992[60], of United States[61], awarded the Defense Distinguished Service Medal[62], specialised in computer science[63]; Melvin Dresher[64]; Marshall Hall[65]; Bruce Lee Rothschild[66]; Miriam Becker[67]; and Howard Engstrom[68].

Works and Contributions

Notable works include harmonic divisor number[69], Ore's theorem[70], Ore extension[71], and Ore condition[72]. Things named for Øystein Ore include Ore's theorem[73], a theorem[74] and Ore condition[75].

Recognition

Awards received include Guggenheim Fellowship[76], a fellowship grant[77], in United States[78], founded in 1925[79] and Knight First Class of the Order of St. Olav‎[80], a grade of an order[81], in Norway[82].

Death and Burial

Øystein Ore died on August 13, 1968[5]. Recorded place of death include Oslo[4], a big city[83], in Norway[84], founded in 1048[85] and Bærum Municipality[11], a municipality of Norway[86], in Norway[87]. He is buried at Grove Street Cemetery[12].

Why It Matters

Øystein Ore ranks in the top 0.72% of human entities by monthly Wikipedia readership (286 views/month, #7,250 of 1,000,298).[9] He has Wikipedia articles in 16 language editions, a strong signal of global cultural recognition.[88] He is known by 13 alternative names across languages and contexts.[89]

He is credited with the discovery of harmonic divisor number[90], a type of integer[91]. Entities named for him include Ore's theorem[73], a theorem[74] and Ore condition[75].

His notable doctoral advisees include Howard Engstrom[92], a computer scientist[93], 1913–1962[94], of United States[95]; Grace Hopper[96], a mathematician[97], 1906–1992[98], of United States[99], awarded the Defense Distinguished Service Medal[100], specialised in computer science[101]; Bruce Lee Rothschild[102], a mathematician[103], b. 1941[104], of United States[105], awarded the Fellow of the American Mathematical Society[106], specialised in combinatorics[107]; and Marshall Hall[108], a mathematician[109], 1910–1990[110], of United States[111], awarded the Guggenheim Fellowship[112], specialised in algebra[113].

FAQs

Where was Øystein Ore born?

Øystein Ore's place of birth was Christiania[2].

Where did Øystein Ore die?

Øystein Ore died in Oslo[4].

What did Øystein Ore do for work?

Øystein Ore worked as mathematician[6], historian of mathematics[7], and university teacher[8].

Where did Øystein Ore go to school?

Øystein Ore was educated at University of Oslo[23], University of Göttingen[24], and Oslo Cathedral School[25].

What awards did Øystein Ore receive?

Honors received include Guggenheim Fellowship[76] and Knight First Class of the Order of St. Olav‎[80].

What did Øystein Ore discover?

Øystein Ore is credited as discoverer of harmonic divisor number[90].

References

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

Direct Wikidata claims

  1. [2] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  2. [10] ↑ . Czech National Authority Database. Retrieved . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [11] ↑ . Geni.com. wikidata.org.
  5. [13] ↑ . wikidata.org.
  6. [20] ↑ . wikidata.org.
  7. [23] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  8. [24] ↑ . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  9. [25] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  10. [14] ↑ . wikidata.org.
  11. [15] ↑ . wikidata.org.
  12. [16] ↑ . wikidata.org.
  13. [17] ↑ . Czech National Authority Database. Retrieved . wikidata.org.
  14. [18] ↑ . Czech National Authority Database. Retrieved . wikidata.org.
  15. [19] ↑ . Czech National Authority Database. Retrieved . wikidata.org.
  16. [6] ↑ . wikidata.org.
  17. [7] ↑ . wikidata.org.
  18. [8] ↑ . wikidata.org.
  19. [21] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  20. [22] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  21. [12] ↑ . Find a Grave. grovestreetcemetery.org. Provenance: wikidata.org.
  22. [76] ↑ . wikidata.org.
  23. [80] ↑ . MacTutor History of Mathematics archive. wikidata.org.
  24. [26] ↑ . Mathematics Genealogy Project. Retrieved . wikidata.org.
  25. [58] ↑ . Mathematics Genealogy Project. wikidata.org.
  26. [64] ↑ . Mathematics Genealogy Project. wikidata.org.
  27. [65] ↑ . Mathematics Genealogy Project. wikidata.org.
  28. [66] ↑ . Mathematics Genealogy Project. wikidata.org.
  29. [67] ↑ . Mathematics Genealogy Project. wikidata.org.
  30. [68] ↑ . Mathematics Genealogy Project. wikidata.org.
  31. [3] ↑ . BnF authorities. Retrieved . wikidata.org.
  32. [5] ↑ . BnF authorities. Retrieved . wikidata.org.
  33. [69] ↑ . wikidata.org.
  34. [70] ↑ . wikidata.org.
  35. [71] ↑ . wikidata.org.
  36. [72] ↑ . wikidata.org.
  37. [27] ↑ . wikidata.org.
  38. [44] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [90] ↑ . wikidata.org. → on this site
  2. [92] ↑ . wikidata.org. → on this site
  3. [96] ↑ . wikidata.org. → on this site
  4. [102] ↑ . wikidata.org. → on this site
  5. [108] ↑ . wikidata.org. → on this site
  6. [73] ↑ . wikidata.org. → on this site
  7. [75] ↑ . 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
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  5. [32] ↑ . Wikidata. wikidata.org. → on this site
  6. [83] ↑ . Wikidata. wikidata.org. → on this site
  7. [84] ↑ . Wikidata. wikidata.org. → on this site
  8. [85] ↑ . Wikidata. wikidata.org. → on this site
  9. [86] ↑ . Wikidata. wikidata.org. → on this site
  10. [87] ↑ . Wikidata. wikidata.org. → on this site
  11. [33] ↑ . Wikidata. wikidata.org. → on this site
  12. [34] ↑ . Wikidata. wikidata.org. → on this site
  13. [35] ↑ . Wikidata. wikidata.org. → on this site
  14. [36] ↑ . Wikidata. wikidata.org. → on this site
  15. [37] ↑ . Wikidata. wikidata.org. → on this site
  16. [38] ↑ . Wikidata. wikidata.org. → on this site
  17. [39] ↑ . Wikidata. wikidata.org. → on this site
  18. [40] ↑ . Wikidata. wikidata.org. → on this site
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  23. [46] ↑ . Wikidata. wikidata.org. → on this site
  24. [47] ↑ . Wikidata. wikidata.org. → on this site
  25. [48] ↑ . Wikidata. wikidata.org. → on this site
  26. [49] ↑ . Wikidata. wikidata.org. → on this site
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  33. [56] ↑ . Wikidata. wikidata.org. → on this site
  34. [57] ↑ . Wikidata. wikidata.org. → on this site
  35. [77] ↑ . Wikidata. wikidata.org. → on this site
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  37. [79] ↑ . Wikidata. wikidata.org. → on this site
  38. [81] ↑ . Wikidata. wikidata.org. → on this site
  39. [82] ↑ . Wikidata. wikidata.org. → on this site
  40. [59] ↑ . Wikidata. wikidata.org. → on this site
  41. [60] ↑ . Wikidata. wikidata.org. → on this site
  42. [61] ↑ . Wikidata. wikidata.org. → on this site
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  44. [63] ↑ . Wikidata. wikidata.org. → on this site
  45. [91] ↑ . Wikidata. wikidata.org. → on this site
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  63. [113] ↑ . Wikidata. wikidata.org. → on this site
  64. [74] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [9] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [88] ↑ . Wikidata sitelinks. wikidata.org.
  3. [89] ↑ . Wikidata aliases. 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). Øystein Ore. Retrieved October 5, 2026, from https://4ort.xyz/entity/ystein-ore
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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. 8w ago · Ajarmund · 2026-08-09 view diff on Wikidata ↗
    Described by source → Svensk uppslagsbok
    Place of birth → Christiania, Oslo
    "/* wbeditentity-statements-multiple-properties-update:0||3 */ hvem er hvem 1948 ([[:toollabs:editgroups/b/OR/13e74922d5c|details]])"
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