Cauchy–Schwarz inequality

a useful inequality encountered in many different settings, such as linear algebra, analysis, probability theory, vector algebra and other areas. It is considered to be one of the most important inequalities in all of mathematics
Intangible theorem Q190546
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Cauchy–Schwarz inequality

Summary

Cauchy–Schwarz inequality is a theorem[1]. It ranks in the top 0.61% of theorem entities by monthly Wikipedia readership (1,167 views/month, #8 of 1,306).[2]

Key Facts

  • Cauchy–Schwarz inequality is credited with the discovery of Viktor Bunyakovsky[3].
  • Cauchy–Schwarz inequality's instance of is recorded as theorem[4].
  • Cauchy–Schwarz inequality's instance of is recorded as inequality[5].
  • Augustin-Louis Cauchy is named after Cauchy–Schwarz inequality[6].
  • Hermann Schwarz is named after Cauchy–Schwarz inequality[7].
  • Viktor Bunyakovsky is named after Cauchy–Schwarz inequality[8].
  • Cauchy–Schwarz inequality's subclass of is recorded as triangle inequality theorem[9].
  • Cauchy–Schwarz inequality's Freebase ID is recorded as /m/09hpm[10].
  • Cauchy–Schwarz inequality's Gran Enciclopèdia Catalana ID is recorded as 0061469[11].
  • Cauchy–Schwarz inequality's Encyclopædia Britannica Online ID is recorded as topic/Cauchy-Schwarz-inequality[12].
  • Cauchy–Schwarz inequality's different from is recorded as Cauchy's estimate[13].
  • Cauchy–Schwarz inequality's different from is recorded as Cauchy–Schwarz inequality for sums[14].
  • Cauchy–Schwarz inequality's defining formula is recorded as |\langle \mathbf{u},\mathbf{v}\rangle| ^2 \leq \langle \mathbf{u},\mathbf{u}\rangle \cdot \langle \mathbf{v},\mathbf{v}\rangle[15].
  • Cauchy–Schwarz inequality's studied by is recorded as multilinear algebra[16].
  • Cauchy–Schwarz inequality's studied by is recorded as Euclidean geometry[17].
  • Cauchy–Schwarz inequality's MathWorld ID is recorded as SchwarzsInequality[18].
  • Cauchy–Schwarz inequality's JSTOR topic ID is recorded as cauchy-schwarz-inequality[19].
  • Cauchy–Schwarz inequality's nLab ID is recorded as Cauchy–Schwarz inequality[20].
  • Cauchy–Schwarz inequality's maintained by WikiProject is recorded as WikiProject Mathematics[21].
  • Cauchy–Schwarz inequality's Microsoft Academic ID is recorded as 184701930[22].
  • Cauchy–Schwarz inequality's Brilliant Wiki ID is recorded as cauchy-schwarz-inequality[23].
  • Cauchy–Schwarz inequality's ProofWiki ID is recorded as Cauchy-Bunyakovsky-Schwarz_Inequality[24].
  • Cauchy–Schwarz inequality's Online PWN Encyclopedia ID is recorded as 3883636[25].
  • Cauchy–Schwarz inequality's Encyclopedia of Mathematics article ID is recorded as Cauchy_Schwarz_inequality[26].
  • Cauchy–Schwarz inequality's generalization of is recorded as Cauchy–Schwarz inequality for sums[27].

Body

Works and Contributions

Cauchy–Schwarz inequality is credited with the discovery of Viktor Bunyakovsky[3].

Why It Matters

Cauchy–Schwarz inequality ranks in the top 0.61% of theorem entities by monthly Wikipedia readership (1,167 views/month, #8 of 1,306).[2] It has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[28] It is known by 77 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [5] . wikidata.org.
  3. [3] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Freebase Data Dumps. 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.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. wikidata.org.

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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). Cauchy–Schwarz inequality. Retrieved May 3, 2026, from https://4ort.xyz/entity/cauchy-schwarz-inequality
MLA “Cauchy–Schwarz inequality.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/cauchy-schwarz-inequality.
BibTeX @misc{4ortxyz_cauchy-schwarz-inequality_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Cauchy–Schwarz inequality}}, year = {2026}, url = {https://4ort.xyz/entity/cauchy-schwarz-inequality}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Cauchy–Schwarz inequality — https://4ort.xyz/entity/cauchy-schwarz-inequality (retrieved 2026-05-03)

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