combination

way of selecting things out of a group where order does not matter
Intangible mathematical_concept Q202805
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combination

Summary

combination is a mathematical concept[1]. combination ranks in the top 4% of mathematical_concept entities by monthly Wikipedia readership (609 views/month).[2]

Key Facts

  • combination's instance of is recorded as mathematical concept[3].
  • combination's instance of is recorded as binary function[4].
  • combination's subclass of is recorded as selection[5].
  • combination's Commons category is recorded as Combinations (combinatorics)[6].
  • combination's BNCF Thesaurus ID is recorded as 32733[7].
  • combination's Freebase ID is recorded as /m/01mdk[8].
  • combination's Dewey Decimal Classification is recorded as 511.23[9].
  • combination's PSH ID is recorded as 7156[10].
  • combination's described by source is recorded as Otto's encyclopedia[11].
  • combination's Encyclopædia Britannica Online ID is recorded as topic/combination[12].
  • combination's Stack Exchange tag is recorded as https://stackoverflow.com/tags/combinations[13].
  • combination's has characteristic is recorded as number of combinations without repetition[14].
  • combination's different from is recorded as Combination[15].
  • combination's different from is recorded as permutation[16].
  • combination's different from is recorded as union[17].
  • combination's different from is recorded as connection[18].
  • combination's defining formula is recorded as C^k_n = \binom nk = \frac{n(n-1)\dotsb(n-k+1)}{k(k-1)\dotsb1}[19].
  • combination's studied by is recorded as combinatorics[20].
  • combination's MathWorld ID is recorded as Combination[21].
  • combination's Treccani ID is recorded as combinazione[22].
  • combination's Quora topic ID is recorded as Combination[23].
  • combination's Open Library subject ID is recorded as combinations[24].
  • combination's Rosetta Code page ID is recorded as Combinations_and_permutations[25].
  • combination's Dictionary of Algorithms and Data Structures ID is recorded as combination[26].
  • combination's Treccani Vocabulary ID is recorded as combinazione[27].

Body

Works and Contributions

Things named for combination include combinatorics[28], a branch of mathematics[29].

Why It Matters

combination ranks in the top 4% of mathematical_concept entities by monthly Wikipedia readership (609 views/month).[2] combination has Wikipedia articles in 27 language editions, a strong signal of global cultural recognition.[30] combination is known by 26 alternative names across languages and contexts.[31]

Entities named for combination include combinatorics[28], a branch of mathematics[29].

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] . Nuovo soggettario. wikidata.org.
  6. [8] . Freebase Data Dumps. wikidata.org.
  7. [9] . Nuovo soggettario. Retrieved . 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.
  21. [23] . Quora. 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. [2] . 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). combination. Retrieved May 3, 2026, from https://4ort.xyz/entity/combination
MLA “combination.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/combination.
BibTeX @misc{4ortxyz_combination_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{combination}}, year = {2026}, url = {https://4ort.xyz/entity/combination}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): combination — https://4ort.xyz/entity/combination (retrieved 2026-05-03)

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