Robert Tarjan

American computer scientist
Person human Q92638
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Robert Tarjan was born on April 30, 1948, in Pomona.[1][2][3][4][5][6][7] He has United States citizenship.[8][1][9][5] He works as a mathematician, computer scientist, and university teacher.[10][11][9]

Robert Tarjan

Summary

Robert Tarjan is a human[1]. Born in Pomona[2], he… he was born on +1948-04-30T00:00:00Z[3]. He worked as a mathematician[4], computer scientist[5], and university teacher[6]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (152 views/month, #7,209 of 1,000,298).[7]

Key Facts

  • Born in Pomona[2], Robert Tarjan…
  • Robert Tarjan was born on +1948-04-30T00:00:00Z[3].
  • Robert Tarjan held citizenship in United States[8].
  • Robert Tarjan worked as a mathematician[4].
  • Robert Tarjan's professions included computer scientist[5].
  • Robert Tarjan worked as a university teacher[6].
  • Robert Tarjan's field of work was informatics[9].
  • Robert Tarjan's field of work was combinatorics[10].
  • Among Robert Tarjan's employers was Princeton University[11].
  • Robert Tarjan was employed by Hewlett-Packard[12].
  • Robert Tarjan was educated at California Institute of Technology[13].
  • Robert Tarjan was educated at Stanford University[14].
  • Robert Tarjan's doctoral advisor was Robert W. Floyd[15].
  • Robert Tarjan received the Guggenheim Fellowship[16].
  • Robert Tarjan received the Turing Award[17].
  • Robert Tarjan received the IMU Abacus Medal[18].
  • Robert Tarjan received the Paris Kanellakis Award[19].
  • Robert Tarjan received the O'Reilly Open Source Award[20].
  • Robert Tarjan received the ACM Fellow[21].
  • Robert Tarjan was a member of National Academy of Sciences[22].
  • Robert Tarjan was a member of American Philosophical Society[23].
  • Robert Tarjan was a member of American Association for the Advancement of Science[24].
  • Robert Tarjan was a member of American Academy of Arts and Sciences[25].
  • Robert Tarjan was a member of National Academy of Engineering[26].
  • Robert Tarjan was a member of Association for Computing Machinery[27].

Body

Origins and Family

Robert Tarjan's place of birth was Pomona[2]. He was born on +1948-04-30T00:00:00Z[3].

Education

Educated at California Institute of Technology[13], a university[28], in United States[29], founded in 1891[30], headquartered in California[31] and Stanford University[14], a private university[32], in United States[33], founded in 1885[34], headquartered in Stanford[35]. Robert Tarjan's doctoral advisor was Robert W. Floyd[15].

Career and Affiliations

Recorded occupations include mathematician[4], computer scientist[5], and university teacher[6]. Fields of work include informatics[9], an academic major[36], founded in 1957[37] and combinatorics[10], a branch of mathematics[38]. Employers include Princeton University[11], a private university[39], in United States[40], founded in 1746[41], headquartered in Princeton[42] and Hewlett-Packard[12], a business[43], in United States[44], founded in 1939[45], headquartered in Palo Alto[46]. Doctoral students include Daniel Sleator[47], a computer scientist[48], b. 1953[49], of United States[50], awarded the Paris Kanellakis Award[51], specialised in computer science[52]; Ramesh Sitaraman[53], a computer scientist[54], awarded the IEEE Fellow[55]; John Russell Gilbert[56], awarded the Fellow of the Society for Industrial and Applied Mathematics[57]; Jeff Westbrook[58]; Monika Henzinger[59]; and Thomas Lengauer[60].

Recognition

Awards received include Guggenheim Fellowship[16], a fellowship grant[61], in United States[62], founded in 1925[63]; Turing Award[17], a science award[64], in United States[65], founded in 1966[66]; IMU Abacus Medal[18], a science award[67], founded in 1981[68]; Paris Kanellakis Award[19], an award[69]; O'Reilly Open Source Award[20], an award[70], founded in 2005[71]; and ACM Fellow[21], a fellowship award[72].

Works and Contributions

Things named for Robert Tarjan include Tarjan's strongly connected components algorithm[73] and Tarjan's off-line least common ancestors algorithm[74].

Why It Matters

Robert Tarjan ranks in the top 0.72% of human entities by monthly Wikipedia readership (152 views/month, #7,209 of 1,000,298).[7] He has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[75] He is known by 16 alternative names across languages and contexts.[76]

He is credited with the discovery of Fibonacci heap[77], a data structure[78]; median of medians[79], a selection algorithm[80]; and Tarjan's off-line least common ancestors algorithm[81], an offline algorithm[82]. Entities named for him include Tarjan's strongly connected components algorithm[73] and Tarjan's off-line least common ancestors algorithm[74].

His notable doctoral advisees include Daniel Sleator[83], a computer scientist[84], b. 1953[85], of United States[86], awarded the Paris Kanellakis Award[87], specialised in computer science[88]; Chris Okasaki[89], a computer scientist[90], specialised in computer science[91]; Ramesh Sitaraman[92], a computer scientist[93], awarded the IEEE Fellow[94]; Monika Henzinger[95], a computer scientist[96], b. 1966[97], of Germany[98], awarded the ACM Fellow[99]; Thomas Lengauer[100], a computer scientist[101], b. 1952[102], of Germany[103], awarded the Karl Heinz Beckurts Award[104]; and Neal E. Young[105].

FAQs

Where was Robert Tarjan born?

Robert Tarjan's place of birth was Pomona[2].

What did Robert Tarjan do for work?

Robert Tarjan worked as mathematician[4], computer scientist[5], and university teacher[6].

Where did Robert Tarjan go to school?

Robert Tarjan was educated at California Institute of Technology[13] and Stanford University[14].

What awards did Robert Tarjan receive?

Honors received include Guggenheim Fellowship[16], Turing Award[17], IMU Abacus Medal[18], and Paris Kanellakis Award[19].

What did Robert Tarjan discover?

Robert Tarjan is credited as discoverer of Fibonacci heap[77], median of medians[79], and Tarjan's off-line least common ancestors algorithm[81].

References

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

Direct Wikidata claims

  1. [2] . cs.indstate.edu. cs.indstate.edu. Provenance: wikidata.org.
  2. [8] . researchgate.net. Retrieved . researchgate.net. Provenance: wikidata.org.
  3. [13] . cs.princeton.edu. Retrieved . cs.princeton.edu. Provenance: wikidata.org.
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  5. [9] . wikidata.org.
  6. [10] . sciencedirect.com. Retrieved . sciencedirect.com. Provenance: wikidata.org.
  7. [4] . wikidata.org.
  8. [5] . jewprom.50webs.com. jewprom.50webs.com. Provenance: wikidata.org.
  9. [6] . wikidata.org.
  10. [11] . cs.princeton.edu. Retrieved . cs.princeton.edu. Provenance: wikidata.org.
  11. [12] . cs.princeton.edu. Retrieved . cs.princeton.edu. Provenance: wikidata.org.
  12. [16] . wikidata.org.
  13. [17] . amturing.acm.org. amturing.acm.org. Provenance: wikidata.org.
  14. [18] . wikidata.org.
  15. [19] . awards.acm.org. awards.acm.org. Provenance: wikidata.org.
  16. [20] . wikidata.org.
  17. [21] . awards.acm.org. awards.acm.org. Provenance: wikidata.org.
  18. [15] . Mathematics Genealogy Project. Retrieved . genealogy.math.ndsu.nodak.edu. Provenance: wikidata.org.
  19. [47] . wikidata.org.
  20. [53] . wikidata.org.
  21. [56] . Mathematics Genealogy Project. wikidata.org.
  22. [58] . Mathematics Genealogy Project. wikidata.org.
  23. [59] . Mathematics Genealogy Project. wikidata.org.
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  25. [22] . wikidata.org.
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  27. [24] . wikidata.org.
  28. [25] . wikidata.org.
  29. [26] . wikidata.org.
  30. [27] . awards.acm.org. Retrieved . awards.acm.org. Provenance: wikidata.org.
  31. [3] . SNAC. Retrieved . in.com. Provenance: wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [77] . wikidata.org. → on this site
  2. [79] . wikidata.org. → on this site
  3. [81] . wikidata.org. → on this site
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  9. [105] . wikidata.org. → on this site
  10. [73] . wikidata.org. → on this site
  11. [74] . 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
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  59. [104] . 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. [75] . Wikidata sitelinks. wikidata.org.
  3. [76] . 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). Robert Tarjan. Retrieved March 8, 2026, from https://4ort.xyz/entity/robert-tarjan
MLA “Robert Tarjan.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Mar. 2026, https://4ort.xyz/entity/robert-tarjan.
BibTeX @misc{4ortxyz_robert-tarjan_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Robert Tarjan}}, year = {2026}, url = {https://4ort.xyz/entity/robert-tarjan}, note = {Accessed: 2026-03-08}}
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