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index of coincidence

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Intangible technique Q925177
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index of coincidence

Summary

index of coincidence is a technique[1]. It draws 77 Wikipedia views per month (technique category, ranking #124 of 416).[2]

Key Facts

  • index of coincidence is credited with the discovery of William Frederick Friedman[3].
  • index of coincidence's instance of is recorded as technique[4].
  • index of coincidence's instance of is recorded as cryptanalytic term[5].
  • index of coincidence's subclass of is recorded as cryptanalysis[6].
  • index of coincidence's Freebase ID is recorded as /m/014t38[7].
  • index of coincidence's facet of is recorded as cryptanalysis[8].

Body

Works and Contributions

index of coincidence is credited with the discovery of William Frederick Friedman[3].

Why It Matters

index of coincidence draws 77 Wikipedia views per month (technique category, ranking #124 of 416).[2] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[9] It is known by 5 alternative names across languages and contexts.[10]

Related Entities

William Frederick Friedman

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] ↑ . Retrieved . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . Freebase Data Dumps. wikidata.org.
  6. [8] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [9] ↑ . Wikidata sitelinks. wikidata.org.
  3. [10] ↑ . 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). index of coincidence. Retrieved May 3, 2026, from https://4ort.xyz/entity/index-of-coincidence
MLA “index of coincidence.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/index-of-coincidence.
BibTeX @misc{4ortxyz_index-of-coincidence_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{index of coincidence}}, year = {2026}, url = {https://4ort.xyz/entity/index-of-coincidence}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): index of coincidence — https://4ort.xyz/entity/index-of-coincidence (retrieved 2026-05-03)

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