Ajima Naonobu

Japanese mathematician
Person human Q412791
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Ajima Naonobu

Summary

Ajima Naonobu is a human[1]. Born in Shiba[2], he… he was born on January 1, 1732[3]. He died in Shiba[4]. He died on November 14, 1798[5]. He worked as a mathematician[6] and astronomer[7]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (12 views/month, #7,297 of 1,000,298).[8]

Key Facts

  • Ajima Naonobu was born in Shiba[2].
  • Ajima Naonobu passed away in Shiba[4].
  • Ajima Naonobu was born on January 1, 1732[3].
  • Ajima Naonobu died on November 14, 1798[5].
  • Burial took place at Jorinji temple[9].
  • Ajima Naonobu held citizenship in Japan[10].
  • Ajima Naonobu's professions included mathematician[6].
  • Ajima Naonobu worked as an astronomer[7].
  • Among Ajima Naonobu's employers was Shinjō Domain[11].
  • A notable student of Ajima Naonobu was Sakabe Kōhan[12].
  • A notable work attributed to Ajima Naonobu is Malfatti circles[13].
  • Ajima Naonobu was influenced by Takakazu Seki[14].
  • Ajima Naonobu is recorded as male[15].
  • Ajima Naonobu's instance of is recorded as human[16].
  • Ajima Naonobu's family is recorded as Q11450628[17].
  • Ajima Naonobu's family name is recorded as Ajima[18].
  • Ajima Naonobu's given name is recorded as Naonobu[19].
  • Ajima Naonobu's pseudonym is recorded as 祖眞院智算量空居士[20].
  • Ajima Naonobu's pseudonym is recorded as 万蔵[21].
  • Ajima Naonobu's relative is recorded as Ajima Hisashige[22].
  • Ajima Naonobu studied under Yamaji Nushizumi[23].
  • Ajima Naonobu's birth name is recorded as 安島, 直円[24].
  • Ajima Naonobu's name in native language is recorded as 安島直円[25].
  • Ajima Naonobu's name in kana is recorded as あじま なおのぶ[26].
  • Ajima Naonobu's maintained by WikiProject is recorded as WikiProject Mathematics[27].

Body

Origins and Family

Ajima Naonobu's place of birth was Shiba[2]. He was born on January 1, 1732[3].

Education

Ajima Naonobu studied under Yamaji Nushizumi[23].

Career and Affiliations

Recorded occupations include mathematician[6] and astronomer[7]. Among Ajima Naonobu's employers was Shinjō Domain[11]. A notable student of him was Sakabe Kōhan[12].

Works and Contributions

A notable work attributed to Ajima Naonobu is Malfatti circles[13]. Things named for him include Naonobu[28], a lunar crater[29].

Death and Burial

Ajima Naonobu died on November 14, 1798[5]. He died in Shiba[4]. He is buried at Jorinji temple[9].

Why It Matters

Ajima Naonobu ranks in the top 0.73% of human entities by monthly Wikipedia readership (12 views/month, #7,297 of 1,000,298).[8] He has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[30] He is known by 12 alternative names across languages and contexts.[31]

Entities named for him include Naonobu[28], a lunar crater[29].

FAQs

Where was Ajima Naonobu born?

Ajima Naonobu's place of birth was Shiba[2].

Where did Ajima Naonobu die?

Ajima Naonobu passed away in Shiba[4].

What did Ajima Naonobu do for work?

Ajima Naonobu worked as mathematician[6] and astronomer[7].

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

Inverse relationships (entities pointing at this one)

  1. [28] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] . 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. [30] . Wikidata sitelinks. wikidata.org.
  3. [31] . 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). Ajima Naonobu. Retrieved April 10, 2026, from https://4ort.xyz/entity/ajima-naonobu
MLA “Ajima Naonobu.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/ajima-naonobu.
BibTeX @misc{4ortxyz_ajima-naonobu_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Ajima Naonobu}}, year = {2026}, url = {https://4ort.xyz/entity/ajima-naonobu}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Ajima Naonobu — https://4ort.xyz/entity/ajima-naonobu (retrieved 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. 12d ago · Immanuelle · 2026-09-07 view diff on Wikidata ↗
    Student Sakabe Kōhan
    Place of death Shiba
    Japanese court rank Junior Fifth Rank
    Given name Naonobu
    + 23 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P14005]]: [[Q11071125]], #quickstatements; #temporary_batch_1788803686426"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.