Qin Jiushao

mathematician of Southern Song dynasty, wrote Shu shu jiu zhang (1247)
Person human Q565225
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Summary

Qin Jiushao was born on 1208[1] in Anyue County[2]. He died on 1261[3] in Meizhou[4]. He worked as a mathematician[5] and meteorologist[6]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (197 views/month, #7,270 of 1,000,298).[7]

Key Facts

  • Place of death: Meixian District[8]
  • Date of birth: January 1, 1202[9]
  • Father: Qin Jiyou[10]
  • Country of citizenship: Southern Song dynasty[11]
  • Field of work: number theory[12], irrational number[13], astronomy[14], musicology[15]
  • Notable work: Mathematical Treatise in Nine Sections[16]
  • Sex or gender: male[17]
  • Ancestral home: Anyue[18]
  • Commons category: Qin Jiushao[19]
  • Family name: Qin[20]
  • Languages spoken, written or signed: Chinese[21]
  • Birth name: 秦九韶[22]
  • Name in native language: 秦九韶[23]
  • Courtesy name: 道古[24]
  • Maintained by WikiProject: WikiProject Mathematics[25]
  • P14541: Jwk6k[26]

Why It Matters

Qin Jiushao has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[27] He is known by 16 alternative names across languages and contexts.[28]

Works attributed to him include Mathematical Treatise in Nine Sections[29], a version, edition or translation[30], in Southern Song dynasty[31].

FAQs

Where was Qin Jiushao born?

Qin Jiushao's place of birth was Anyue County[2].

Where did Qin Jiushao die?

Qin Jiushao died in Meizhou[4].

Who were Qin Jiushao's parents?

Qin Jiushao's father was Qin Jiyou[10].

What did Qin Jiushao do for work?

Qin Jiushao worked as a mathematician[5] and meteorologist[6].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [4] ↑ . Dictionary of Scientific Biography. encyclopedia.com. Provenance: wikidata.org.
  3. [8] ↑ . wikidata.org.
  4. [17] ↑ . China Biographical Database. wikidata.org.
  5. [10] ↑ . China Biographical Database. wikidata.org.
  6. [11] ↑ . China Biographical Database. wikidata.org.
  7. [18] ↑ . China Biographical Database. wikidata.org.
  8. [12] ↑ . wikidata.org.
  9. [13] ↑ . wikidata.org.
  10. [14] ↑ . wikidata.org.
  11. [15] ↑ . wikidata.org.
  12. [5] ↑ . wikidata.org.
  13. [6] ↑ . Retrieved . wikidata.org.
  14. [19] ↑ . wikidata.org.
  15. [1] ↑ . Shanghai Library Open Data Platform. Retrieved . wikidata.org.
  16. [9] ↑ . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  17. [3] ↑ . MacTutor History of Mathematics archive. Retrieved . wikidata.org.
  18. [20] ↑ . China Biographical Database. wikidata.org.
  19. [16] ↑ . wikidata.org.
  20. [21] ↑ . IdRef. Retrieved . wikidata.org.
  21. [22] ↑ . Virtual International Authority File. wikidata.org.
  22. [23] ↑ . Virtual International Authority File. wikidata.org.
  23. [24] ↑ . China Biographical Database. wikidata.org.
  24. [25] ↑ . wikidata.org.
  25. [26] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [29] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [30] ↑ . Wikidata. wikidata.org. → on this site
  2. [31] ↑ . Wikidata. wikidata.org. → on this site

Aggregate / graph-position facts

  1. [7] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] ↑ . Wikidata sitelinks. wikidata.org.
  3. [28] ↑ . 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). Qin Jiushao. Retrieved October 13, 2026, from https://4ort.xyz/entity/qin-jiushao
MLA “Qin Jiushao.” 4ort.xyz Knowledge Graph, 4ort.xyz, 13 Oct. 2026, https://4ort.xyz/entity/qin-jiushao.
BibTeX @misc{4ortxyz_qin-jiushao_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Qin Jiushao}}, year = {2026}, url = {https://4ort.xyz/entity/qin-jiushao}, note = {Accessed: 2026-10-13}}
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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. 8d ago · Printstream · 2026-10-06 view diff on Wikidata ↗
    Place of death → Meizhou, Meixian District
    Wikipedia languages → ['arz', 'be', 'ca', 'commons', 'cs', 'de', 'en', 'es', 'eu', 'fr', 'gl', 'id', '
    Claims rich → —
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/57880|batch #57880]]: Import more precise places of birth, date from dewiki"
  2. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → Jwk6k
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  3. 22w ago · RVA2869 · 2026-05-08 view diff on Wikidata ↗
    Occupation → mathematician, meteorologist
    Aliases → —
    Instance of → —
    Ancestral home → Anyue
    + 15 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-statements-multiple-properties-update:0||3 */ Cleanup: remove wikimedia refs; remove redundant described-by-source ([[User:Difool/WikidataCleanup]])"
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