singleton

set with exactly one element
Thing general Q1165112
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singleton

Summary

singleton ranks in the top 2% of general entities by monthly Wikipedia readership (91 views/month).[1]

Key Facts

  • singleton's follows is recorded as null tuple[2].
  • singleton's followed by is recorded as ordered pair[3].
  • singleton's followed by is recorded as unordered pair[4].
  • singleton's subclass of is recorded as 𝑛-tuple[5].
  • singleton's subclass of is recorded as group of 1[6].
  • singleton's subclass of is recorded as unordered 𝑛-tuple[7].
  • singleton's subclass of is recorded as set[8].
  • singleton's said to be the same as is recorded as monad[9].
  • singleton's Freebase ID is recorded as /m/021pnr[10].
  • singleton's Encyclopædia Britannica Online ID is recorded as topic/singleton-set-theory[11].
  • singleton's has characteristic is recorded as list of values as qualifiers[12].
  • singleton's different from is recorded as monad[13].
  • singleton's different from is recorded as singleton pattern[14].
  • singleton's defining formula is recorded as {a}[15].
  • singleton's BabelNet ID is recorded as 00071758n[16].
  • singleton's MathWorld ID is recorded as Monad[17].
  • singleton's set cardinality is recorded as 1[18].
  • singleton's maintained by WikiProject is recorded as WikiProject Mathematics[19].
  • singleton's Microsoft Academic ID is recorded as 117354338[20].
  • singleton's in defining formula is recorded as {}[21].
  • singleton's OpenAlex ID is recorded as C117354338[22].
  • singleton's Metamath statement ID is recorded as df-sn[23].

Why It Matters

singleton ranks in the top 2% of general entities by monthly Wikipedia readership (91 views/month).[1] singleton has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[24] singleton is known by 28 alternative names across languages and contexts.[25]

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [3] . wikidata.org.
  3. [4] . wikidata.org.
  4. [5] . wikidata.org.
  5. [6] . wikidata.org.
  6. [7] . wikidata.org.
  7. [8] . wikidata.org.
  8. [9] . wikidata.org.
  9. [10] . Freebase Data Dumps. wikidata.org.
  10. [11] . wikidata.org.
  11. [12] . wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . wikidata.org.
  14. [15] . wikidata.org.
  15. [16] . BabelNet. wikidata.org.
  16. [17] . wikidata.org.
  17. [18] . wikidata.org.
  18. [19] . wikidata.org.
  19. [20] . wikidata.org.
  20. [21] . wikidata.org.
  21. [22] . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.
  22. [23] . wikidata.org.

Aggregate / graph-position facts

  1. [1] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [24] . Wikidata sitelinks. wikidata.org.
  3. [25] . 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). singleton. Retrieved April 10, 2026, from https://4ort.xyz/entity/singleton-q1165112
MLA “singleton.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/singleton-q1165112.
BibTeX @misc{4ortxyz_singleton-q1165112_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{singleton}}, year = {2026}, url = {https://4ort.xyz/entity/singleton-q1165112}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): singleton — https://4ort.xyz/entity/singleton-q1165112 (retrieved 2026-04-10)

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