Gerhard Ringel

German-American mathematician (1919–2008)
Person human Q113731
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Gerhard Ringel

Summary

Gerhard Ringel is a human[1]. He was born in Kollnbrunn[2]. He was born on October 28, 1919[3]. He died in Santa Cruz[4]. He died on June 24, 2008[5]. He worked as a mathematician[6], university teacher[7], and entomologist[8]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (37 views/month, #7,289 of 1,000,298).[9]

Key Facts

  • Gerhard Ringel was born in Kollnbrunn[2].
  • Gerhard Ringel died in Santa Cruz[4].
  • Gerhard Ringel was born on October 28, 1919[3].
  • Gerhard Ringel died on June 24, 2008[5].
  • Gerhard Ringel held citizenship in United States[10].
  • Gerhard Ringel's professions included mathematician[6].
  • Gerhard Ringel worked as a university teacher[7].
  • Gerhard Ringel's professions included entomologist[8].
  • Gerhard Ringel's field of work was graph theory[11].
  • Among Gerhard Ringel's employers was Freie Universität Berlin[12].
  • Gerhard Ringel was employed by University of California, Santa Cruz[13].
  • Gerhard Ringel's education included a stint at University of Bonn[14].
  • Gerhard Ringel's education included a stint at Charles University[15].
  • Gerhard Ringel's doctoral advisor was Emanuel Sperner[16].
  • Gerhard Ringel's doctoral advisor was Ernst Peschl[17].
  • Gerhard Ringel is recorded as male[18].
  • Gerhard Ringel's instance of is recorded as human[19].
  • Gerhard Ringel supervised Gerhard Preuß as a doctoral student[20].
  • Gerhard Ringel supervised Mark Jungerman as a doctoral student[21].
  • Gerhard Ringel supervised Nora Hartsfield as a doctoral student[22].
  • Gerhard Ringel supervised Karl Schaffer as a doctoral student[23].
  • Gerhard Ringel supervised Sharon Cabaniss as a doctoral student[24].
  • Gerhard Ringel supervised Linda Valdes as a doctoral student[25].
  • Gerhard Ringel supervised Michael Kleinert as a doctoral student[26].
  • Gerhard Ringel supervised Heidi Mahnke as a doctoral student[27].

Body

Origins and Family

Gerhard Ringel was born in Kollnbrunn[2]. He was born on October 28, 1919[3].

Education

Educated at University of Bonn[14], a public research university[28], in Germany[29], founded in 1818[30], headquartered in Bonn[31] and Charles University[15], a public university[32], in Czech Republic[33], founded in 1348[34], headquartered in Prague[35]. Doctoral advisors include Emanuel Sperner[16], a mathematician[36], 1905–1980[37], of Germany[38], specialised in combinatorics[39] and Ernst Peschl[17], a mathematician[40], 1906–1986[41], of Germany[42], awarded the Medal of the University of Jyväskylä[43], specialised in mathematics[44].

Career and Affiliations

Recorded occupations include mathematician[6], university teacher[7], and entomologist[8]. Gerhard Ringel's field of work was graph theory[11]. Employers include Freie Universität Berlin[12], a public research university[45], in Germany[46], founded in 1948[47], headquartered in Berlin[48] and University of California, Santa Cruz[13], a campus[49], in United States[50], founded in 1965[51]. Doctoral students include Gerhard Preuß[20], a mathematician[52], 1940–2011[53], of Germany[54], specialised in mathematics[55]; Mark Jungerman[21]; Nora Hartsfield[22], a research fellow[56], of United States[57]; Karl Schaffer[23]; Sharon Cabaniss[24]; and Linda Valdes[25].

Death and Burial

Gerhard Ringel died on June 24, 2008[5]. He died in Santa Cruz[4].

Works and Contributions

Things named for Gerhard Ringel include Ringel–Youngs theorem[58], a theorem[59].

Why It Matters

Gerhard Ringel ranks in the top 0.73% of human entities by monthly Wikipedia readership (37 views/month, #7,289 of 1,000,298).[9] He has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[60] He is known by 6 alternative names across languages and contexts.[61]

Entities named for him include Ringel–Youngs theorem[58], a theorem[59].

FAQs

Where was Gerhard Ringel born?

Born in Kollnbrunn[2], Gerhard Ringel…

Where did Gerhard Ringel die?

Gerhard Ringel passed away in Santa Cruz[4].

What did Gerhard Ringel do for work?

Gerhard Ringel worked as mathematician[6], university teacher[7], and entomologist[8].

Where did Gerhard Ringel go to school?

Gerhard Ringel was educated at University of Bonn[14] and Charles University[15].

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. [18] ↑ . Integrated Authority File. Retrieved . wikidata.org.
  4. [10] ↑ . wikidata.org.
  5. [19] ↑ . wikidata.org.
  6. [14] ↑ . wikidata.org.
  7. [15] ↑ . wikidata.org.
  8. [11] ↑ . wikidata.org.
  9. [6] ↑ . wikidata.org.
  10. [7] ↑ . wikidata.org.
  11. [8] ↑ . Retrieved . wikidata.org.
  12. [12] ↑ . wikidata.org.
  13. [13] ↑ . wikidata.org.
  14. [16] ↑ . Mathematics Genealogy Project. wikidata.org.
  15. [17] ↑ . Mathematics Genealogy Project. wikidata.org.
  16. [20] ↑ . Mathematics Genealogy Project. wikidata.org.
  17. [21] ↑ . Mathematics Genealogy Project. wikidata.org.
  18. [22] ↑ . Mathematics Genealogy Project. wikidata.org.
  19. [23] ↑ . Mathematics Genealogy Project. wikidata.org.
  20. [24] ↑ . Mathematics Genealogy Project. wikidata.org.
  21. [25] ↑ . Mathematics Genealogy Project. wikidata.org.
  22. [26] ↑ . Mathematics Genealogy Project. wikidata.org.
  23. [27] ↑ . Mathematics Genealogy Project. wikidata.org.
  24. [3] ↑ . BnF authorities. Retrieved . catalogue.bnf.fr. Provenance: wikidata.org.
  25. [5] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [58] ↑ . 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. [45] ↑ . Wikidata. wikidata.org. → on this site
  10. [46] ↑ . Wikidata. wikidata.org. → on this site
  11. [47] ↑ . Wikidata. wikidata.org. → on this site
  12. [48] ↑ . Wikidata. wikidata.org. → on this site
  13. [49] ↑ . Wikidata. wikidata.org. → on this site
  14. [50] ↑ . Wikidata. wikidata.org. → on this site
  15. [51] ↑ . Wikidata. wikidata.org. → on this site
  16. [36] ↑ . Wikidata. wikidata.org. → on this site
  17. [37] ↑ . Wikidata. wikidata.org. → on this site
  18. [38] ↑ . Wikidata. wikidata.org. → on this site
  19. [39] ↑ . Wikidata. wikidata.org. → on this site
  20. [40] ↑ . Wikidata. wikidata.org. → on this site
  21. [41] ↑ . Wikidata. wikidata.org. → on this site
  22. [42] ↑ . Wikidata. wikidata.org. → on this site
  23. [43] ↑ . Wikidata. wikidata.org. → on this site
  24. [44] ↑ . Wikidata. wikidata.org. → on this site
  25. [52] ↑ . Wikidata. wikidata.org. → on this site
  26. [53] ↑ . Wikidata. wikidata.org. → on this site
  27. [54] ↑ . Wikidata. wikidata.org. → on this site
  28. [55] ↑ . Wikidata. wikidata.org. → on this site
  29. [56] ↑ . Wikidata. wikidata.org. → on this site
  30. [57] ↑ . Wikidata. wikidata.org. → on this site
  31. [59] ↑ . 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. [60] ↑ . Wikidata sitelinks. wikidata.org.
  3. [61] ↑ . 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). Gerhard Ringel. Retrieved October 6, 2026, from https://4ort.xyz/entity/gerhard-ringel
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BibTeX @misc{4ortxyz_gerhard-ringel_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Gerhard Ringel}}, year = {2026}, url = {https://4ort.xyz/entity/gerhard-ringel}, note = {Accessed: 2026-10-06}}
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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. 3d ago · Printstream · 2026-10-06 view diff on Wikidata ↗
    Field of work → graph theory
    Place of birth → Kollnbrunn
    Educated at → University of Bonn, Charles University
    Family name → Ringel
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/57880|batch #57880]]: Import more precise places of birth, date from dewiki"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.