Ackermann function

total non-primitive-recursive computable function
Thing function Q341835
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Ackermann function

Summary

Ackermann function is a function[1]. It ranks in the top 4% of function entities by monthly Wikipedia readership (740 views/month).[2]

Key Facts

  • Ackermann function's instance of is recorded as function[3].
  • Ackermann function's instance of is recorded as mathematical concept[4].
  • Ackermann function's instance of is recorded as binary function[5].
  • Wilhelm Ackermann is named after Ackermann function[6].
  • Ackermann function's Freebase ID is recorded as /m/0125s[7].
  • Ackermann function's defining formula is recorded as A(m, n) = \begin{cases}n+1 & m = 0 \A(m-1, 1) & m > 0, n = 0 \A(m-1, A(m, n-1)) & m > 0, n > 0.\end{cases}[8].
  • Ackermann function's studied by is recorded as computability theory[9].
  • Ackermann function's MathWorld ID is recorded as AckermannFunction[10].
  • Ackermann function's Rosetta Code page ID is recorded as Ackermann_function[11].
  • Ackermann function's Dictionary of Algorithms and Data Structures ID is recorded as ackermann[12].
  • Ackermann function's Dictionary of Algorithms and Data Structures ID is recorded as AckermansFunction[13].
  • Ackermann function's maintained by WikiProject is recorded as WikiProject Mathematics[14].
  • Ackermann function's Microsoft Academic ID is recorded as 33436860[15].
  • Ackermann function's in defining formula is recorded as m[16].
  • Ackermann function's in defining formula is recorded as n[17].
  • Ackermann function's Encyclopedia of Mathematics article ID is recorded as Ackermann_function[18].
  • Ackermann function's Treccani's Enciclopedia della Matematica ID is recorded as funzione-di-ackermann[19].
  • Ackermann function's OpenAlex ID is recorded as C33436860[20].
  • Ackermann function's Metamath statement ID is recorded as df-ack[21].

Why It Matters

Ackermann function ranks in the top 4% of function entities by monthly Wikipedia readership (740 views/month).[2] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[22] It is known by 10 alternative names across languages and contexts.[23]

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] . wikidata.org.
  5. [7] . Freebase Data Dumps. 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] . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.
  19. [21] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [22] . Wikidata sitelinks. wikidata.org.
  3. [23] . 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). Ackermann function. Retrieved May 3, 2026, from https://4ort.xyz/entity/ackermann-function
MLA “Ackermann function.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ackermann-function.
BibTeX @misc{4ortxyz_ackermann-function_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Ackermann function}}, year = {2026}, url = {https://4ort.xyz/entity/ackermann-function}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Ackermann function — https://4ort.xyz/entity/ackermann-function (retrieved 2026-05-03)

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