Henri Delannoy

French mathematician (1833-1915)
Person human Q3130590
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Henri Delannoy

Summary

Henri Delannoy is a human[1]. His place of birth was Bourbonne-les-Bains[2]. He was born on September 28, 1833[3]. He died in Guéret[4]. He died on February 5, 1915[5]. He worked as a mathematician[6], historian[7], and military personnel[8]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (4 views/month, #7,300 of 1,000,298).[9]

Key Facts

  • Henri Delannoy was born in Bourbonne-les-Bains[2].
  • Henri Delannoy died in Guéret[4].
  • Henri Delannoy was born on September 28, 1833[3].
  • Henri Delannoy died on February 5, 1915[5].
  • Henri Delannoy is buried at Saint-Sulpice-le-Guérétois cemetery[10].
  • Henri Delannoy held citizenship in France[11].
  • Henri Delannoy's professions included mathematician[6].
  • Henri Delannoy's professions included historian[7].
  • Henri Delannoy's professions included military personnel[8].
  • Henri Delannoy held the position of chairperson[12].
  • Henri Delannoy was employed by French Armed Forces[13].
  • Henri Delannoy was educated at École polytechnique[14].
  • Henri Delannoy's education included a stint at lycée Alain-Fournier[15].
  • Henri Delannoy was educated at Collège Sainte-Barbe[16].
  • Henri Delannoy's education included a stint at École d'application de l'artillerie et du génie in Metz[17].
  • A notable work attributed to Henri Delannoy is Delannoy number[18].
  • Henri Delannoy received the Knight of the Legion of Honour[19].
  • Henri Delannoy received the Officer of the Legion of Honour[20].
  • Henri Delannoy is recorded as male[21].
  • Henri Delannoy's instance of is recorded as human[22].
  • Henri Delannoy's Commons category is recorded as Henri Auguste Delannoy[23].
  • Henri Delannoy's military, police or special rank is recorded as lieutenant[24].
  • Henri Delannoy's military, police or special rank is recorded as captain[25].
  • Henri Delannoy was part of the conflict Battle of Solferino[26].
  • Henri Delannoy was part of the conflict Franco-Prussian War[27].

Body

Origins and Family

Henri Delannoy's place of birth was Bourbonne-les-Bains[2]. He was born on September 28, 1833[3].

Education

Educated at École polytechnique[14], a grande école[28], in France[29], founded in 1794[30], headquartered in Palaiseau[31]; lycée Alain-Fournier[15], a lycée[32], in France[33]; Collège Sainte-Barbe[16], a lycée[34], in France[35]; and École d'application de l'artillerie et du génie in Metz[17], a military academy[36], in France[37].

Career and Affiliations

Recorded occupations include mathematician[6], historian[7], and military personnel[8]. Henri Delannoy was employed by French Armed Forces[13]. He held the position of chairperson[12].

Works and Contributions

A notable work attributed to Henri Delannoy is Delannoy number[18]. Things named for him include Delannoy number[38], a mathematical concept[39].

Recognition

Awards received include Knight of the Legion of Honour[19], a grade of an order[40], in France[41] and Officer of the Legion of Honour[20], a grade of an order[42], in France[43].

Death and Burial

Henri Delannoy died on February 5, 1915[5]. He died in Guéret[4]. He is buried at Saint-Sulpice-le-Guérétois cemetery[10].

Why It Matters

Henri Delannoy ranks in the top 0.73% of human entities by monthly Wikipedia readership (4 views/month, #7,300 of 1,000,298).[9]

Entities named for him include Delannoy number[38], a mathematical concept[39].

FAQs

Where was Henri Delannoy born?

Henri Delannoy was born in Bourbonne-les-Bains[2].

Where did Henri Delannoy die?

Henri Delannoy died in Guéret[4].

What did Henri Delannoy do for work?

Henri Delannoy worked as mathematician[6], historian[7], and military personnel[8].

Where did Henri Delannoy go to school?

Henri Delannoy was educated at École polytechnique[14], lycée Alain-Fournier[15], Collège Sainte-Barbe[16], and École d'application de l'artillerie et du génie in Metz[17].

What awards did Henri Delannoy receive?

Honors received include Knight of the Legion of Honour[19] and Officer of the Legion of Honour[20].

References

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

Direct Wikidata claims

  1. [2] . MacTutor History of Mathematics archive. wikidata.org.
  2. [4] . MacTutor History of Mathematics archive. wikidata.org.
  3. [21] . wikidata.org.
  4. [11] . wikidata.org.
  5. [22] . wikidata.org.
  6. [12] . MacTutor History of Mathematics archive. wikidata.org.
  7. [14] . MacTutor History of Mathematics archive. wikidata.org.
  8. [15] . MacTutor History of Mathematics archive. wikidata.org.
  9. [16] . MacTutor History of Mathematics archive. wikidata.org.
  10. [17] . MacTutor History of Mathematics archive. wikidata.org.
  11. [6] . wikidata.org.
  12. [7] . wikidata.org.
  13. [8] . wikidata.org.
  14. [13] . MacTutor History of Mathematics archive. wikidata.org.
  15. [10] . u-paris.hal.science. u-paris.hal.science. Provenance: wikidata.org.
  16. [19] . wikidata.org.
  17. [20] . doi.org. doi.org. Provenance: wikidata.org.
  18. [23] . wikidata.org.
  19. [24] . MacTutor History of Mathematics archive. wikidata.org.
  20. [25] . MacTutor History of Mathematics archive. wikidata.org.
  21. [3] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  22. [5] . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  23. [26] . wikidata.org.
  24. [27] . wikidata.org.
  25. [18] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [38] . 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. [40] . Wikidata. wikidata.org. → on this site
  12. [41] . Wikidata. wikidata.org. → on this site
  13. [42] . Wikidata. wikidata.org. → on this site
  14. [43] . Wikidata. wikidata.org. → on this site
  15. [39] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [9] . Wikimedia Foundation. dumps.wikimedia.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). Henri Delannoy. Retrieved April 11, 2026, from https://4ort.xyz/entity/henri-delannoy
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BibTeX @misc{4ortxyz_henri-delannoy_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Henri Delannoy}}, year = {2026}, url = {https://4ort.xyz/entity/henri-delannoy}, note = {Accessed: 2026-04-11}}
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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. 14d ago · Epìdosis · 2026-05-20 view diff on Wikidata ↗
    Educated at École polytechnique, lycée Alain-Fournier, Collège Sainte-Barbe +1
    Place of birth Bourbonne-les-Bains
    Languages spoken, written or signed French
    Position held chairperson
    + 23 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/32084|batch #32084]]: import P21 and P106 from GND (26)"
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