Bell number

integer sequence counting the possible partitions of a set
Intangible mathematical_concept Q816063
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Bell number

Summary

Bell number is a mathematical concept[1]. It ranks in the top 10% of mathematical_concept entities by monthly Wikipedia readership (201 views/month).[2]

Key Facts

  • Bell number's instance of is recorded as mathematical concept[3].
  • Eric Temple Bell is named after Bell number[4].
  • Bell number's subclass of is recorded as integer sequence[5].
  • Bell number's Freebase ID is recorded as /m/01ck8p[6].
  • Bell number's OEIS ID is recorded as A000110[7].
  • Bell number's topic's main category is recorded as Q20715813[8].
  • Bell number's definition domain is recorded as non-negative integer[9].
  • Bell number's codomain is recorded as positive integer[10].
  • Bell number's defining formula is recorded as \begin{align} B_n & =|\operatorname{part}({1,\dots,n})| \ & =T_n(1) \ & =\sum_{k=0}^n\left{{n\atop k}\right} \ & =\sum_{k=0}^{n-1}\binom nkB_k \end{align}[11].
  • Bell number's MathWorld ID is recorded as BellNumber[12].
  • Bell number's maintained by WikiProject is recorded as WikiProject Mathematics[13].
  • Bell number's Microsoft Academic ID is recorded as 174710074[14].
  • Bell number's in defining formula is recorded as B_n[15].
  • Bell number's in defining formula is recorded as |-|[16].
  • Bell number's in defining formula is recorded as \operatorname{part}[17].
  • Bell number's in defining formula is recorded as T_n[18].
  • Bell number's in defining formula is recorded as \left{{-\atop-}\right}[19].
  • Bell number's in defining formula is recorded as \binom--[20].
  • Bell number's Namuwiki ID is recorded as 벨 수[21].
  • Bell number's Treccani's Enciclopedia della Matematica ID is recorded as numeri-di-bell[22].

Why It Matters

Bell number ranks in the top 10% of mathematical_concept entities by monthly Wikipedia readership (201 views/month).[2] It has Wikipedia articles in 21 language editions, a strong signal of global cultural recognition.[23] It is known by 14 alternative names across languages and contexts.[24]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . Freebase Data Dumps. wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [23] . Wikidata sitelinks. wikidata.org.
  3. [24] . 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). Bell number. Retrieved May 3, 2026, from https://4ort.xyz/entity/bell-number
MLA “Bell number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/bell-number.
BibTeX @misc{4ortxyz_bell-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Bell number}}, year = {2026}, url = {https://4ort.xyz/entity/bell-number}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Bell number — https://4ort.xyz/entity/bell-number (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/bell-number · Last refreshed:

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 · KrBot bot · 2026-05-06 view diff on Wikidata ↗
    Named after
    Topic's main category Q20715813
    Maintained by wikiproject WikiProject Mathematics
    Named after Eric Temple Bell
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaimvalue:1| */ [[Property:P1571]]: [[Q16317911]], разрешение перенаправления / resolving redirect [[Q28920044]] → [[Q16317911]] ([[:toollabs:editgroups/b/KrBotResolvingRedirect/Q28920044_Q16"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.