function

association of a single output to each input
Intangible mathematical_concept Q11348
function
Zasdfgbnm · Public Domain · Wikimedia
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function

Summary

function is a mathematical concept[1]. function ranks in the top 0.89% of mathematical_concept entities by monthly Wikipedia readership (8,797 views/month, #9 of 1,007).[2]

Key Facts

  • function's instance of is recorded as mathematical concept[3].
  • function is a type of binary relation[4].
  • function is a type of partial function[5].
  • function is part of multivalued function[6].
  • function is part of generalized function[7].
  • function's Commons category is recorded as Functions (mathematics)[8].
  • function is the opposite of multivalued function[9].
  • function comprises argument of a function[10].
  • function comprises function value[11].
  • function's topic's main category is recorded as Category:Functions and mappings[12].
  • function's notation is recorded as maplet[13].
  • function's described at URL is recorded as https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:functions[14].
  • function's described at URL is recorded as https://www.khanacademy.org/math/linear-algebra/matrix-transformations/linear-transformations/v/a-more-formal-understanding-of-functions[15].
  • function's described by source is recorded as Armenian Soviet Encyclopedia[16].
  • function's described by source is recorded as ISO 80000-2:2019 Quantities and units — Part 2: Mathematics[17].
  • function's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[18].
  • function's described by source is recorded as Brockhaus and Efron Encyclopedic Dictionary[19].
  • function's described by source is recorded as Small Brockhaus and Efron Encyclopedic Dictionary[20].
  • function's described by source is recorded as Encyclopædia Britannica 11th edition[21].
  • function's described by source is recorded as University College London Department of Mathematics[22].
  • function's topic has template is recorded as Template:Functions[23].
  • function's topic has template is recorded as Template:Functions navbox[24].
  • function's has characteristic is recorded as left-totality[25].
  • function's has characteristic is recorded as right-uniqueness[26].
  • function's has characteristic is recorded as type of mathematical function[27].

Body

Definition and Type

function's instance of is recorded as mathematical concept[3]. Recorded subclass of include binary relation[4] and partial function[5]. function is the opposite of multivalued function[9].

Use and Application

Components include argument of a function[10] and function value[11]. Part of include multivalued function[6] and generalized function[7].

Influence

Things named for function include f(x)[28], a girl group[29], founded in 2009[30]; MapReduce[31], a programming paradigm[32]; and Wikifunctions[33], a Wikimedia content project[34], founded in 2020[35].

Why It Matters

function ranks in the top 0.89% of mathematical_concept entities by monthly Wikipedia readership (8,797 views/month, #9 of 1,007).[2] function has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[36] function is known by 89 alternative names across languages and contexts.[37]

Entities named for function include f(x)[28], a girl group[29], founded in 2009[30]; MapReduce[31], a programming paradigm[32]; and Wikifunctions[33], a Wikimedia content project[34], founded in 2020[35].

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . Elementi di teoria degli insiemi. wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . Retrieved . 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.
  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
  2. [31] ↑ . wikidata.org. → on this site
  3. [33] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] ↑ . Wikidata. wikidata.org. → on this site
  2. [30] ↑ . Wikidata. wikidata.org. → on this site
  3. [32] ↑ . Wikidata. wikidata.org. → on this site
  4. [34] ↑ . Wikidata. wikidata.org. → on this site
  5. [35] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [36] ↑ . Wikidata sitelinks. wikidata.org.
  3. [37] ↑ . 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). function. Retrieved October 8, 2026, from https://4ort.xyz/entity/function
MLA “function.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Oct. 2026, https://4ort.xyz/entity/function.
BibTeX @misc{4ortxyz_function_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{function}}, year = {2026}, url = {https://4ort.xyz/entity/function}, note = {Accessed: 2026-10-08}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): function — https://4ort.xyz/entity/function (retrieved 2026-10-08)

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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. 7h ago · KrBot bot · 2026-10-08 view diff on Wikidata ↗
    Subclass of → binary relation, partial function
    Sitelink count → 137
    Wikipedia languages → ['af', 'als', 'am', 'an', 'ar', 'ary', 'arz', 'as', 'ast', 'az', 'ba', 'bat_smg'
    Part of → multivalued function, generalized function
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetqualifier-update:1| */ [[Property:P31]]: [[Q10340026]], разрешение перенаправления / resolving redirect [[Q15975724]] → [[Q10340026]] ([[:toollabs:editgroups/b/KrBotResolvingRedirect/Q15975724"
  2. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 2Bo1oq
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  3. 16w ago · Jindřich Rubeš · 2026-06-11 view diff on Wikidata ↗
    Svkkl authority id → h0005269-funkce
    "/* wbcreateclaim-create:1| */ [[Property:P9322]]: h0005269-funkce, [[:toollabs:quickstatements/#/batch/259490|batch #259490]]"
  4. 20w ago · Twofivesixbot bot · 2026-05-17 view diff on Wikidata ↗
    Has characteristic → left-totality, right-uniqueness, type of mathematical function +4
    Opposite of → multivalued function
    Great russian encyclopedia online id (2017) → 4725924
    Topic has template → Template:Functions, Template:Functions navbox
    + 18 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|7 */ [[Property:P2347]]: 7097, mv to monolingual text names on YSO statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.