Klein four-group

direct product of two cyclic groups of order two; smallest group that is non-cyclic
Thing finite_abelian_group Q550593
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Klein four-group

Summary

Klein four-group is a finite abelian group[1]. It draws 142 Wikipedia views per month (finite_abelian_group category, ranking #1 of 1).[2]

Key Facts

  • Klein four-group's image is recorded as Cayley table Klein four-group RK01.svg[3].
  • Klein four-group's instance of is recorded as finite abelian group[4].
  • Klein four-group's instance of is recorded as dihedral group[5].
  • Klein four-group's instance of is recorded as mathematical concept[6].
  • Felix Klein is named after Klein four-group[7].
  • Klein four-group's Commons category is recorded as Klein four-group[8].
  • Klein four-group's Freebase ID is recorded as /m/0bjhh[9].
  • Klein four-group's group cardinality is recorded as {'amount': '+4'}[10].
  • Klein four-group's defining formula is recorded as \mathrm{V} = \langle a,b \mid a^2 = b^2 = (ab)^2 = e \rangle[11].
  • Klein four-group's studied by is recorded as group theory[12].
  • Klein four-group's MathWorld ID is recorded as Vierergruppe[13].
  • Klein four-group's MathWorld ID is recorded as FiniteGroupC2xC2[14].
  • Klein four-group's MathWorld ID is recorded as KleinFour-Group[15].
  • Klein four-group's nLab ID is recorded as Klein four-group[16].
  • Klein four-group's maintained by WikiProject is recorded as WikiProject Mathematics[17].
  • Klein four-group's Microsoft Academic ID is recorded as 70514976[18].
  • Klein four-group's ProofWiki ID is recorded as Definition:Klein_Four-Group[19].
  • Klein four-group's PlanetMath ID is recorded as Klein4group[20].
  • Klein four-group's Lex ID is recorded as Kleins_firegruppe[21].
  • Klein four-group's Group Properties article ID is recorded as Klein_four-group[22].
  • Klein four-group's SmallGroup ID is recorded as 4,2[23].
  • Klein four-group's Treccani's Enciclopedia della Matematica ID is recorded as gruppo-di-klein[24].

Why It Matters

Klein four-group draws 142 Wikipedia views per month (finite_abelian_group category, ranking #1 of 1).[2] It has Wikipedia articles in 25 language editions, a strong signal of global cultural recognition.[25] It is known by 15 alternative names across languages and contexts.[26]

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] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . Freebase Data Dumps. 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] . wikidata.org.
  22. [24] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [25] . Wikidata sitelinks. wikidata.org.
  3. [26] . 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). Klein four-group. Retrieved May 3, 2026, from https://4ort.xyz/entity/klein-four-group
MLA “Klein four-group.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/klein-four-group.
BibTeX @misc{4ortxyz_klein-four-group_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Klein four-group}}, year = {2026}, url = {https://4ort.xyz/entity/klein-four-group}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Klein four-group — https://4ort.xyz/entity/klein-four-group (retrieved 2026-05-03)

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