Robert Sorgenfrey

American mathematician
Person human Q383976
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Summary

Robert Sorgenfrey is a human[1]. He was born in Sunbury[2]. He was born on +1915-08-14T00:00:00Z[3]. He passed away in Los Angeles[4]. He died on +1996-01-07T00:00:00Z[5]. He worked as a mathematician[6] and university teacher[7]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (7 views/month, #7,296 of 1,000,298).[8]

Key Facts

  • Born in Sunbury[2].
  • Robert Sorgenfrey died in Los Angeles[4].
  • Robert Sorgenfrey was born on +1915-08-14T00:00:00Z[3].
  • Robert Sorgenfrey died on +1996-01-07T00:00:00Z[5].
  • Robert Sorgenfrey held citizenship in United States[9].
  • Robert Sorgenfrey worked as a mathematician[6].
  • Robert Sorgenfrey's professions included university teacher[7].
  • Robert Sorgenfrey's field of work was general topology[10].
  • Among Robert Sorgenfrey's employers was University of California, Los Angeles[11].
  • Robert Sorgenfrey was educated at University of California, Los Angeles[12].
  • Robert Sorgenfrey was educated at University of Texas at Austin[13].
  • Robert Sorgenfrey's doctoral advisor was Robert Lee Moore[14].
  • Robert Sorgenfrey is recorded as male[15].
  • Robert Sorgenfrey's instance of is recorded as human[16].
  • Robert Sorgenfrey supervised James Victor Whittaker as a doctoral student[17].
  • Robert Sorgenfrey supervised Manuel Phillip Berriozábal as a doctoral student[18].
  • Robert Sorgenfrey supervised Stan Franklin as a doctoral student[19].
  • Robert Sorgenfrey supervised Ralph Robert Sabella as a doctoral student[20].
  • Robert Sorgenfrey's ISNI is recorded as 0000000084375651[21].
  • Robert Sorgenfrey's VIAF cluster ID is recorded as 33419064[22].
  • Robert Sorgenfrey's Library of Congress authority ID is recorded as n85027354[23].
  • Robert Sorgenfrey's Mathematics Genealogy Project ID is recorded as 302[24].
  • Robert Sorgenfrey's Freebase ID is recorded as /m/09g8hyp[25].
  • Robert Sorgenfrey's family name is recorded as Sorgenfrey[26].
  • Robert Sorgenfrey's given name is recorded as Robert[27].

Body

Origins and Family

Robert Sorgenfrey's place of birth was Sunbury[2]. He was born on +1915-08-14T00:00:00Z[3].

Education

Educated at University of California, Los Angeles[12], a public research university[28], in United States[29], founded in 1919[30], headquartered in Los Angeles[31] and University of Texas at Austin[13], a public research university[32], in United States[33], founded in 1883[34], headquartered in Austin[35]. Robert Sorgenfrey's doctoral advisor was Robert Lee Moore[14].

Career and Affiliations

Recorded occupations include mathematician[6] and university teacher[7]. Robert Sorgenfrey's field of work was general topology[10]. He was employed by University of California, Los Angeles[11]. Doctoral students include James Victor Whittaker[17], a university teacher[36], 1931–2018[37], of United States[38]; Manuel Phillip Berriozábal[18], a university teacher[39], b. 1931[40], of United States[41], awarded the Fellow of the American Mathematical Society[42]; Stan Franklin[19], an artificial intelligence researcher[43], 1931–2023[44], of United States[45]; and Ralph Robert Sabella[20], a university teacher[46], b. 1934[47].

Death and Burial

Robert Sorgenfrey died on +1996-01-07T00:00:00Z[5]. He passed away in Los Angeles[4].

Works and Contributions

Things named for Robert Sorgenfrey include Sorgenfrey plane[48], a Hausdorff space[49] and Sorgenfrey line[50], a Hausdorff space[51].

Why It Matters

Robert Sorgenfrey ranks in the top 0.73% of human entities by monthly Wikipedia readership (7 views/month, #7,296 of 1,000,298).[8] He has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[52] He is known by 3 alternative names across languages and contexts.[53]

Entities named for him include Sorgenfrey plane[48], a Hausdorff space[49] and Sorgenfrey line[50], a Hausdorff space[51].

FAQs

Where was Robert Sorgenfrey born?

Robert Sorgenfrey's place of birth was Sunbury[2].

Where did Robert Sorgenfrey die?

Robert Sorgenfrey passed away in Los Angeles[4].

What did Robert Sorgenfrey do for work?

Robert Sorgenfrey worked as mathematician[6] and university teacher[7].

Where did Robert Sorgenfrey go to school?

Robert Sorgenfrey was educated at University of California, Los Angeles[12] and University of Texas at Austin[13].

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

Inverse relationships (entities pointing at this one)

  1. [48] ↑ . wikidata.org. → on this site
  2. [50] ↑ . 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. [38] ↑ . Wikidata. wikidata.org. → on this site
  12. [39] ↑ . Wikidata. wikidata.org. → on this site
  13. [40] ↑ . Wikidata. wikidata.org. → on this site
  14. [41] ↑ . Wikidata. wikidata.org. → on this site
  15. [42] ↑ . Wikidata. wikidata.org. → on this site
  16. [43] ↑ . Wikidata. wikidata.org. → on this site
  17. [44] ↑ . Wikidata. wikidata.org. → on this site
  18. [45] ↑ . Wikidata. wikidata.org. → on this site
  19. [46] ↑ . Wikidata. wikidata.org. → on this site
  20. [47] ↑ . Wikidata. wikidata.org. → on this site
  21. [49] ↑ . Wikidata. wikidata.org. → on this site
  22. [51] ↑ . 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. [52] ↑ . Wikidata sitelinks. wikidata.org.
  3. [53] ↑ . 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). Robert Sorgenfrey. Retrieved October 13, 2026, from https://4ort.xyz/entity/robert-sorgenfrey
MLA “Robert Sorgenfrey.” 4ort.xyz Knowledge Graph, 4ort.xyz, 13 Oct. 2026, https://4ort.xyz/entity/robert-sorgenfrey.
BibTeX @misc{4ortxyz_robert-sorgenfrey_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Robert Sorgenfrey}}, year = {2026}, url = {https://4ort.xyz/entity/robert-sorgenfrey}, note = {Accessed: 2026-10-13}}
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