Calkin–Wilf tree

tree in which the vertices correspond 1-for-1 to the positive rational numbers
Thing tree Q4158811
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Calkin–Wilf tree

Summary

Calkin–Wilf tree is a tree[1]. It draws 77 Wikipedia views per month (tree category, ranking #2 of 4).[2]

Key Facts

  • Calkin–Wilf tree's image is recorded as Calkin-Wilf spiral.svg[3].
  • Calkin–Wilf tree's image is recorded as Calkin-Wilf tree children from parent.gif[4].
  • Calkin–Wilf tree's image is recorded as Calkin-Wilf tree.svg[5].
  • Calkin–Wilf tree's image is recorded as Calkin–Wilf tree.svg[6].
  • Calkin–Wilf tree's instance of is recorded as tree[7].
  • Calkin–Wilf tree's instance of is recorded as infinite graph[8].
  • Herbert Wilf is named after Calkin–Wilf tree[9].
  • Neil Calkin is named after Calkin–Wilf tree[10].
  • Calkin–Wilf tree's Commons category is recorded as Calkin–Wilf tree and sequence[11].
  • Calkin–Wilf tree's Freebase ID is recorded as /m/05zyvgg[12].
  • Calkin–Wilf tree's studied by is recorded as graph theory[13].
  • Calkin–Wilf tree's Google Knowledge Graph ID is recorded as /g/11bwdw2vl3[14].
  • Calkin–Wilf tree's MathWorld ID is recorded as Calkin-WilfTree[15].
  • Calkin–Wilf tree's maintained by WikiProject is recorded as WikiProject Mathematics[16].
  • Calkin–Wilf tree's Microsoft Academic ID is recorded as 167099229[17].

Why It Matters

Calkin–Wilf tree draws 77 Wikipedia views per month (tree category, ranking #2 of 4).[2] It has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[18]

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] . math.upenn.edu. math.upenn.edu. Provenance: wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . 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.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [18] . Wikidata sitelinks. 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). Calkin–Wilf tree. Retrieved May 3, 2026, from https://4ort.xyz/entity/calkin-wilf-tree
MLA “Calkin–Wilf tree.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/calkin-wilf-tree.
BibTeX @misc{4ortxyz_calkin-wilf-tree_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Calkin–Wilf tree}}, year = {2026}, url = {https://4ort.xyz/entity/calkin-wilf-tree}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Calkin–Wilf tree — https://4ort.xyz/entity/calkin-wilf-tree (retrieved 2026-05-03)

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