axiom of countable choice

axiom of set theory, asserting that the product of a countable family of nonempty sets is nonempty
Thing axiom_of_set_theory Q1000116
axiom of countable choice
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axiom of countable choice

Summary

axiom of countable choice is an axiom of set theory[1]. It draws 16 Wikipedia views per month (axiom_of_set_theory category, ranking #12 of 17).[2]

Key Facts

  • axiom of countable choice's image is recorded as Axiom of countable choice.svg[3].
  • axiom of countable choice's instance of is recorded as axiom of set theory[4].
  • axiom of countable choice's subclass of is recorded as axiom of choice[5].
  • axiom of countable choice's part of is recorded as list of axioms[6].
  • axiom of countable choice's Freebase ID is recorded as /m/026gkc[7].
  • axiom of countable choice's defining formula is recorded as \left(\forall i\in \mathbb{N} \colon S_i \ne \varnothing\right) \implies \prod_{i\in N}S_i \ne \varnothing[8].
  • axiom of countable choice's nLab ID is recorded as countable choice[9].
  • axiom of countable choice's maintained by WikiProject is recorded as WikiProject Mathematics[10].
  • axiom of countable choice's Microsoft Academic ID is recorded as 2778149689[11].
  • axiom of countable choice's ProofWiki ID is recorded as Axiom:Axiom_of_Countable_Choice[12].
  • axiom of countable choice's in defining formula is recorded as \mathbb{N}[13].
  • axiom of countable choice's Metamath statement ID is recorded as ax-cc[14].
  • axiom of countable choice's logical consequence of is recorded as list of values as qualifiers[15].

Why It Matters

axiom of countable choice draws 16 Wikipedia views per month (axiom_of_set_theory category, ranking #12 of 17).[2] It has Wikipedia articles in 12 language editions, a strong signal of global cultural recognition.[16] It is known by 3 alternative names across languages and contexts.[17]

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.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] . Wikidata sitelinks. wikidata.org.
  3. [17] . 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). axiom of countable choice. Retrieved May 3, 2026, from https://4ort.xyz/entity/axiom-of-countable-choice
MLA “axiom of countable choice.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/axiom-of-countable-choice.
BibTeX @misc{4ortxyz_axiom-of-countable-choice_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{axiom of countable choice}}, year = {2026}, url = {https://4ort.xyz/entity/axiom-of-countable-choice}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): axiom of countable choice — https://4ort.xyz/entity/axiom-of-countable-choice (retrieved 2026-05-03)

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