Penrose stairs

impossible object
Thing impossible_object Q58914
Penrose stairs
Sakurambo · Public Domain · Wikimedia
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Penrose stairs

Summary

Penrose stairs is an impossible object[1]. It draws 405 Wikipedia views per month (impossible_object category, ranking #2 of 3).[2]

Key Facts

  • Penrose stairs is credited with the discovery of Lionel Penrose[3].
  • Penrose stairs is credited with the discovery of Roger Penrose[4].
  • Penrose stairs is credited with the discovery of Q2032939[5].
  • Penrose stairs's image is recorded as Impossible staircase.svg[6].
  • Penrose stairs's instance of is recorded as impossible object[7].
  • Penrose stairs's instance of is recorded as mathematical concept[8].
  • Lionel Penrose is named after Penrose stairs[9].
  • Roger Penrose is named after Penrose stairs[10].
  • Penrose stairs's Commons category is recorded as Penrose stairs[11].
  • Penrose stairs's time of discovery or invention is recorded as +1959-01-01T00:00:00Z[12].
  • Penrose stairs's Freebase ID is recorded as /m/028td5[13].
  • Penrose stairs's MathWorld ID is recorded as PenroseStairway[14].
  • Penrose stairs's Quora topic ID is recorded as Penrose-Stairs[15].
  • Penrose stairs's maintained by WikiProject is recorded as WikiProject Mathematics[16].

Body

Works and Contributions

Credited discoveries include Lionel Penrose[3], a mathematician[17], 1898–1972[18], of United Kingdom[19], awarded the Fellow of the Royal Society[20], specialised in pediatrics[21]; Roger Penrose[4], a mathematician[22], b. 1931[23], of United Kingdom[24], awarded the Fellow of the Royal Society[25], specialised in physics[26]; and Q2032939[5].

Why It Matters

Penrose stairs draws 405 Wikipedia views per month (impossible_object category, ranking #2 of 3).[2] It has Wikipedia articles in 21 language editions, a strong signal of global cultural recognition.[27] It is known by 12 alternative names across languages and contexts.[28]

References

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

Direct Wikidata claims

  1. [6] . wikidata.org.
  2. [7] . wikidata.org.
  3. [8] . wikidata.org.
  4. [3] . wikidata.org.
  5. [4] . wikidata.org.
  6. [5] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . Freebase Data Dumps. wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . Quora. wikidata.org.
  14. [16] . wikidata.org.

Inline context (facts about related entities)

  1. [17] . Wikidata. wikidata.org. → on this site
  2. [18] . Wikidata. wikidata.org. → on this site
  3. [19] . Wikidata. wikidata.org. → on this site
  4. [20] . Wikidata. wikidata.org. → on this site
  5. [21] . Wikidata. wikidata.org. → on this site
  6. [22] . Wikidata. wikidata.org. → on this site
  7. [23] . Wikidata. wikidata.org. → on this site
  8. [24] . Wikidata. wikidata.org. → on this site
  9. [25] . Wikidata. wikidata.org. → on this site
  10. [26] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [27] . Wikidata sitelinks. wikidata.org.
  3. [28] . 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). Penrose stairs. Retrieved May 3, 2026, from https://4ort.xyz/entity/penrose-stairs
MLA “Penrose stairs.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/penrose-stairs.
BibTeX @misc{4ortxyz_penrose-stairs_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Penrose stairs}}, year = {2026}, url = {https://4ort.xyz/entity/penrose-stairs}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Penrose stairs — https://4ort.xyz/entity/penrose-stairs (retrieved 2026-05-03)

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