Catalan's identity

mathematical identity, generalizing Cassini's: F_n^2 - F_{n - r}F_{n + r} = (-1)^{n - r}F_r^2
Intangible theorem Q118220479
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Catalan's identity

Summary

Catalan's identity is a theorem[1].

Key Facts

  • Catalan's identity's instance of is recorded as theorem[2].
  • Catalan's identity's instance of is recorded as identity[3].
  • Eugène Charles Catalan is named after Catalan's identity[4].
  • Catalan's identity's defining formula is recorded as F_n^2 - F_{n - r}F_{n + r} = (-1)^{n - r}F_r^2[5].
  • Catalan's identity's MathWorld ID is recorded as CatalansIdentity[6].
  • Catalan's identity's maintained by WikiProject is recorded as WikiProject Mathematics[7].
  • Catalan's identity's in defining formula is recorded as F_n[8].

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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). Catalan's identity. Retrieved May 3, 2026, from https://4ort.xyz/entity/catalan-s-identity
MLA “Catalan's identity.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/catalan-s-identity.
BibTeX @misc{4ortxyz_catalan-s-identity_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Catalan's identity}}, year = {2026}, url = {https://4ort.xyz/entity/catalan-s-identity}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Catalan's identity — https://4ort.xyz/entity/catalan-s-identity (retrieved 2026-05-03)

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