Klaus Wagner

German mathematician (1910–2000)
Person human Q96013
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Klaus Wagner

Summary

Klaus Wagner is a human[1]. He was born in Cologne[2]. He was born on March 31, 1910[3]. He died on February 6, 2000[4]. He worked as a mathematician[5], topologist[6], and university teacher[7]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (30 views/month, #7,298 of 1,000,298).[8]

Key Facts

  • Born in Cologne[2], Klaus Wagner…
  • Klaus Wagner was born on March 31, 1910[3].
  • Klaus Wagner died on February 6, 2000[4].
  • Klaus Wagner held citizenship in Germany[9].
  • Klaus Wagner worked as a mathematician[5].
  • Klaus Wagner worked as a topologist[6].
  • Klaus Wagner worked as a university teacher[7].
  • Klaus Wagner's field of work was graph theory[10].
  • Klaus Wagner's field of work was topology[11].
  • Klaus Wagner was employed by University of Cologne[12].
  • Klaus Wagner's education included a stint at University of Cologne[13].
  • Klaus Wagner's doctoral advisor was Karl Dörge[14].
  • A notable student of Klaus Wagner was Rudolf Jeuck[15].
  • Klaus Wagner received the honorary doctor of the University of Duisburg-Essen[16].
  • Klaus Wagner is recorded as male[17].
  • Klaus Wagner's instance of is recorded as human[18].
  • Klaus Wagner supervised Heinz Adolf Jung as a doctoral student[19].
  • Klaus Wagner supervised Rudolf Halin as a doctoral student[20].
  • Klaus Wagner supervised Egbert Harzheim as a doctoral student[21].
  • Klaus Wagner supervised Wolfgang Konrad Wilhelm Mader as a doctoral student[22].
  • Klaus Wagner supervised Max Dieter Gerhardts as a doctoral student[23].
  • Klaus Wagner supervised Kais Al-Wahabi as a doctoral student[24].
  • Klaus Wagner supervised Hans-Joachim Burscheid as a doctoral student[25].
  • Klaus Wagner supervised Bernd Fischer as a doctoral student[26].
  • Klaus Wagner supervised Heinz Schumacher as a doctoral student[27].

Body

Origins and Family

Klaus Wagner's place of birth was Cologne[2]. He was born on March 31, 1910[3].

Education

Klaus Wagner's education included a stint at University of Cologne[13]. His doctoral advisor was Karl Dörge[14].

Career and Affiliations

Recorded occupations include mathematician[5], topologist[6], and university teacher[7]. Fields of work include graph theory[10], an academic discipline[28] and topology[11], a branch of mathematics[29]. Among Klaus Wagner's employers was University of Cologne[12]. A notable student of him was Rudolf Jeuck[15]. Doctoral students include Heinz Adolf Jung[19]; Rudolf Halin[20], a mathematician[30], 1934–2014[31], of Germany[32], specialised in graph theory[33]; Egbert Harzheim[21], a mathematician[34], 1932–2012[35], of Germany[36], specialised in mathematics[37]; Wolfgang Konrad Wilhelm Mader[22]; Max Dieter Gerhardts[23]; and Kais Al-Wahabi[24].

Recognition

Klaus Wagner received the honorary doctor of the University of Duisburg-Essen[16].

Death and Burial

Klaus Wagner died on February 6, 2000[4].

Works and Contributions

Things named for Klaus Wagner include Wagner's theorem[38], a theorem[39]; Wagner graph[40], a Hamiltonian graph[41]; and Fáry's theorem[42], a theorem[43].

Why It Matters

Klaus Wagner ranks in the top 0.73% of human entities by monthly Wikipedia readership (30 views/month, #7,298 of 1,000,298).[8] He has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[44]

Entities named for him include Wagner's theorem[38], a theorem[39]; Wagner graph[40], a Hamiltonian graph[41]; and Fáry's theorem[42], a theorem[43].

His notable doctoral advisees include Rudolf Halin[45], a mathematician[46], 1934–2014[47], of Germany[48], specialised in graph theory[49].

FAQs

Where was Klaus Wagner born?

Klaus Wagner's place of birth was Cologne[2].

What did Klaus Wagner do for work?

Klaus Wagner worked as mathematician[5], topologist[6], and university teacher[7].

Where did Klaus Wagner go to school?

Klaus Wagner was educated at University of Cologne[13].

What awards did Klaus Wagner receive?

Honors received include honorary doctor of the University of Duisburg-Essen[16].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [17] . wikidata.org.
  3. [9] . wikidata.org.
  4. [18] . wikidata.org.
  5. [13] . Mathematics Genealogy Project. wikidata.org.
  6. [10] . wikidata.org.
  7. [11] . wikidata.org.
  8. [5] . wikidata.org.
  9. [6] . wikidata.org.
  10. [7] . wikidata.org.
  11. [12] . wikidata.org.
  12. [16] . wikidata.org.
  13. [14] . Mathematics Genealogy Project. wikidata.org.
  14. [19] . Mathematics Genealogy Project. wikidata.org.
  15. [20] . Mathematics Genealogy Project. wikidata.org.
  16. [21] . Mathematics Genealogy Project. wikidata.org.
  17. [22] . Mathematics Genealogy Project. wikidata.org.
  18. [23] . Mathematics Genealogy Project. wikidata.org.
  19. [24] . Mathematics Genealogy Project. wikidata.org.
  20. [25] . Mathematics Genealogy Project. wikidata.org.
  21. [26] . Mathematics Genealogy Project. wikidata.org.
  22. [27] . Mathematics Genealogy Project. wikidata.org.
  23. [3] . wikidata.org.
  24. [4] . wikidata.org.
  25. [15] . Mathematics Genealogy Project. wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [45] . wikidata.org. → on this site
  2. [38] . wikidata.org. → on this site
  3. [40] . wikidata.org. → on this site
  4. [42] . 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. [46] . Wikidata. wikidata.org. → on this site
  12. [47] . Wikidata. wikidata.org. → on this site
  13. [48] . Wikidata. wikidata.org. → on this site
  14. [49] . Wikidata. wikidata.org. → on this site
  15. [39] . Wikidata. wikidata.org. → on this site
  16. [41] . Wikidata. wikidata.org. → on this site
  17. [43] . 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. [44] . Wikidata sitelinks. 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). Klaus Wagner. Retrieved April 10, 2026, from https://4ort.xyz/entity/klaus-wagner
MLA “Klaus Wagner.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/klaus-wagner.
BibTeX @misc{4ortxyz_klaus-wagner_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Klaus Wagner}}, year = {2026}, url = {https://4ort.xyz/entity/klaus-wagner}, note = {Accessed: 2026-04-10}}
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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. 9d ago · Epìdosis · 2026-05-22 view diff on Wikidata ↗
    Doctoral student Heinz Adolf Jung, Rudolf Halin, Egbert Harzheim +21
    Sex or gender male
    Occupation mathematician, topologist, university teacher
    Instance of human
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/32157|batch #32157]]: import P21 and P106 from GND (38)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.