András Hajnal

Hungarian set theorist (1931–2016)
Person human Q515987
Press Enter · cited answer in seconds

András Hajnal

Summary

András Hajnal is a human[1]. His place of birth was Budapest[2]. He was born on May 13, 1931[3]. He passed away in Budapest[4]. He died on July 30, 2016[5]. He worked as a mathematician[6]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (80 views/month, #7,291 of 1,000,298).[7]

Key Facts

  • Born in Budapest[2], András Hajnal…
  • András Hajnal died in Budapest[4].
  • András Hajnal was born on May 13, 1931[3].
  • András Hajnal died on July 30, 2016[5].
  • A child of András Hajnal was Péter Hajnal[8].
  • András Hajnal held citizenship in Hungary[9].
  • András Hajnal worked as a mathematician[6].
  • András Hajnal's field of work was combinatorics[10].
  • András Hajnal's field of work was graph theory[11].
  • András Hajnal's field of work was set theory[12].
  • András Hajnal held the position of director[13].
  • András Hajnal held the position of director[14].
  • András Hajnal was employed by Rutgers University[15].
  • András Hajnal was employed by Eötvös Loránd University[16].
  • Among András Hajnal's employers was Alfréd Rényi Institute of Mathematics[17].
  • András Hajnal was educated at University of Szeged[18].
  • András Hajnal was educated at Eötvös Loránd University[19].
  • András Hajnal's education included a stint at Berzsenyi Dániel Secondary School[20].
  • András Hajnal's doctoral advisor was László Kalmár[21].
  • A notable work attributed to András Hajnal is Erdős–Hajnal conjecture[22].
  • András Hajnal received the Fellow of the American Mathematical Society[23].
  • András Hajnal was a member of Hungarian Academy of Sciences[24].
  • András Hajnal was a member of American Mathematical Society[25].
  • András Hajnal is recorded as male[26].
  • András Hajnal's instance of is recorded as human[27].

Body

Origins and Family

Born in Budapest[2], András Hajnal… he was born on May 13, 1931[3].

Education

Educated at University of Szeged[18], a public university[28], in Hungary[29], founded in 1921[30], headquartered in Cluj-Napoca[31]; Eötvös Loránd University[19], a public research university[32], in Hungary[33], founded in 1635[34], headquartered in Budapest[35]; and Berzsenyi Dániel Secondary School[20], a Gymnasium[36], in Hungary[37], founded in 1858[38]. András Hajnal's doctoral advisor was László Kalmár[21].

Career and Affiliations

András Hajnal worked as a mathematician[6]. Fields of work include combinatorics[10], a branch of mathematics[39]; graph theory[11], an academic discipline[40]; and set theory[12], a branch of mathematics[41]. Employers include Rutgers University[15], a public research university[42], in United States[43], founded in 1766[44]; Eötvös Loránd University[16], a public research university[45], in Hungary[46], founded in 1635[47], headquartered in Budapest[48]; and Alfréd Rényi Institute of Mathematics[17], a research institute[49], in Hungary[50], founded in 1950[51], headquartered in Budapest[52]. Positions held include director[13], a profession[53]. Doctoral students include Péter Komjáth[54], a mathematician[55], b. 1953[56], of Hungary[57], awarded the Paul Erdős Prize[58], specialised in set theory[59]; György Petruska[60], a mathematician[61], b. 1941[62], of Hungary[63]; Miklós Ajtai[64], a mathematician[65], b. 1946[66], of Hungary[67], awarded the Knuth Prize[68], specialised in computational complexity theory[69]; István Juhász[70], a mathematician[71], b. 1943[72], of Hungary[73]; Richard Carr[74]; and Péter Hamburger[75].

Works and Contributions

A notable work attributed to András Hajnal is Erdős–Hajnal conjecture[22].

Recognition

András Hajnal received the Fellow of the American Mathematical Society[23].

Personal Life

A child of András Hajnal was Péter Hajnal[8].

Death and Burial

András Hajnal died on July 30, 2016[5]. He died in Budapest[4].

Why It Matters

András Hajnal ranks in the top 0.73% of human entities by monthly Wikipedia readership (80 views/month, #7,291 of 1,000,298).[7] He has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[76] He is known by 11 alternative names across languages and contexts.[77]

His notable doctoral advisees include Miklós Ajtai[78], a mathematician[79], b. 1946[80], of Hungary[81], awarded the Knuth Prize[82], specialised in computational complexity theory[83] and István Juhász[84], a mathematician[85], b. 1943[86], of Hungary[87].

FAQs

Where was András Hajnal born?

Born in Budapest[2], András Hajnal…

Where did András Hajnal die?

András Hajnal died in Budapest[4].

What did András Hajnal do for work?

András Hajnal worked as mathematician[6].

Where did András Hajnal go to school?

András Hajnal was educated at University of Szeged[18], Eötvös Loránd University[19], and Berzsenyi Dániel Secondary School[20].

What awards did András Hajnal receive?

Honors received include Fellow of the American Mathematical Society[23].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [26] ↑ . wikidata.org.
  4. [9] ↑ . wikidata.org.
  5. [27] ↑ . wikidata.org.
  6. [13] ↑ . wikidata.org.
  7. [14] ↑ . wikidata.org.
  8. [8] ↑ . wikidata.org.
  9. [18] ↑ . wikidata.org.
  10. [19] ↑ . wikidata.org.
  11. [20] ↑ . wikidata.org.
  12. [10] ↑ . wikidata.org.
  13. [11] ↑ . wikidata.org.
  14. [12] ↑ . wikidata.org.
  15. [6] ↑ . wikidata.org.
  16. [15] ↑ . wikidata.org.
  17. [16] ↑ . wikidata.org.
  18. [17] ↑ . wikidata.org.
  19. [23] ↑ . wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [54] ↑ . wikidata.org.
  22. [60] ↑ . wikidata.org.
  23. [64] ↑ . wikidata.org.
  24. [70] ↑ . wikidata.org.
  25. [74] ↑ . wikidata.org.
  26. [75] ↑ . wikidata.org.
  27. [24] ↑ . wikidata.org.
  28. [25] ↑ . wikidata.org.
  29. [3] ↑ . wikidata.org.
  30. [5] ↑ . wikidata.org.
  31. [22] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [78] ↑ . wikidata.org. → on this site
  2. [84] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [53] ↑ . Wikidata. wikidata.org. → on this site
  2. [28] ↑ . Wikidata. wikidata.org. → on this site
  3. [29] ↑ . Wikidata. wikidata.org. → on this site
  4. [30] ↑ . Wikidata. wikidata.org. → on this site
  5. [31] ↑ . Wikidata. wikidata.org. → on this site
  6. [32] ↑ . Wikidata. wikidata.org. → on this site
  7. [33] ↑ . Wikidata. wikidata.org. → on this site
  8. [34] ↑ . Wikidata. wikidata.org. → on this site
  9. [35] ↑ . Wikidata. wikidata.org. → on this site
  10. [36] ↑ . Wikidata. wikidata.org. → on this site
  11. [37] ↑ . Wikidata. wikidata.org. → on this site
  12. [38] ↑ . Wikidata. wikidata.org. → on this site
  13. [39] ↑ . Wikidata. wikidata.org. → on this site
  14. [40] ↑ . Wikidata. wikidata.org. → on this site
  15. [41] ↑ . Wikidata. wikidata.org. → on this site
  16. [42] ↑ . Wikidata. wikidata.org. → on this site
  17. [43] ↑ . Wikidata. wikidata.org. → on this site
  18. [44] ↑ . Wikidata. wikidata.org. → on this site
  19. [45] ↑ . Wikidata. wikidata.org. → on this site
  20. [46] ↑ . Wikidata. wikidata.org. → on this site
  21. [47] ↑ . Wikidata. wikidata.org. → on this site
  22. [48] ↑ . Wikidata. wikidata.org. → on this site
  23. [49] ↑ . Wikidata. wikidata.org. → on this site
  24. [50] ↑ . Wikidata. wikidata.org. → on this site
  25. [51] ↑ . Wikidata. wikidata.org. → on this site
  26. [52] ↑ . Wikidata. wikidata.org. → on this site
  27. [55] ↑ . Wikidata. wikidata.org. → on this site
  28. [56] ↑ . Wikidata. wikidata.org. → on this site
  29. [57] ↑ . Wikidata. wikidata.org. → on this site
  30. [58] ↑ . Wikidata. wikidata.org. → on this site
  31. [59] ↑ . Wikidata. wikidata.org. → on this site
  32. [61] ↑ . Wikidata. wikidata.org. → on this site
  33. [62] ↑ . Wikidata. wikidata.org. → on this site
  34. [63] ↑ . Wikidata. wikidata.org. → on this site
  35. [65] ↑ . Wikidata. wikidata.org. → on this site
  36. [66] ↑ . Wikidata. wikidata.org. → on this site
  37. [67] ↑ . Wikidata. wikidata.org. → on this site
  38. [68] ↑ . Wikidata. wikidata.org. → on this site
  39. [69] ↑ . Wikidata. wikidata.org. → on this site
  40. [71] ↑ . Wikidata. wikidata.org. → on this site
  41. [72] ↑ . Wikidata. wikidata.org. → on this site
  42. [73] ↑ . Wikidata. wikidata.org. → on this site
  43. [79] ↑ . Wikidata. wikidata.org. → on this site
  44. [80] ↑ . Wikidata. wikidata.org. → on this site
  45. [81] ↑ . Wikidata. wikidata.org. → on this site
  46. [82] ↑ . Wikidata. wikidata.org. → on this site
  47. [83] ↑ . Wikidata. wikidata.org. → on this site
  48. [85] ↑ . Wikidata. wikidata.org. → on this site
  49. [86] ↑ . Wikidata. wikidata.org. → on this site
  50. [87] ↑ . 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. [76] ↑ . Wikidata sitelinks. wikidata.org.
  3. [77] ↑ . 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). András Hajnal. Retrieved October 8, 2026, from https://4ort.xyz/entity/andr-s-hajnal
MLA “András Hajnal.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Oct. 2026, https://4ort.xyz/entity/andr-s-hajnal.
BibTeX @misc{4ortxyz_andr-s-hajnal_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{András Hajnal}}, year = {2026}, url = {https://4ort.xyz/entity/andr-s-hajnal}, note = {Accessed: 2026-10-08}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): András Hajnal — https://4ort.xyz/entity/andr-s-hajnal (retrieved 2026-10-08)

Canonical URL: https://4ort.xyz/entity/andr-s-hajnal · Last refreshed:

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. 21d ago · Wdadmlibstl · 2026-09-17 view diff on Wikidata ↗
    Given name → András
    Maintained by wikiproject → WikiProject Mathematics
    Sex or gender → male
    Notable work → Erdős–Hajnal conjecture
    + 30 other properties edited (see Wikidata diff for full list)
    "/* wbsetqualifier-add:1| */ [[Property:P2868]]: [[Q2625729]], #quickstatements; #temporary_batch_1789642064215"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.