Calkin–Wilf tree

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Calkin–Wilf tree

Quality:

Calkin–Wilf tree - tree in which the vertices correspond 1-for-1 to the positive rational numbers. Article “Calkin–Wilf tree” in English Wikipedia has 43.9 points for quality (as of July 1, 2025). The article contains 13 references and 8 sections.

This article has the best quality in German Wikipedia. However, this article is the most popular in English version.

In June 2025 the article “Calkin–Wilf tree” was edited by 1 authors in English Wikipedia and written by 1 authors in all languages.

Since the creation of article “Calkin–Wilf tree”, its content was written by 35 registered users of English Wikipedia and edited by 104 registered Wikipedia users in all languages.

The article is cited 18 times in English Wikipedia and cited 52 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #38511 in May 2009
  • Global: #59602 in May 2015

The highest popularity rank from 2008:

  • Local (English): #122932 in May 2009
  • Global: #199328 in May 2009

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1German (de)
Stern-Brocot-Folge
61.0906
2English (en)
Calkin–Wilf tree
43.8721
3Spanish (es)
Árbol de Calkin-Wilf
30.0346
4Catalan (ca)
Arbre de Calkin-Wilf
26.4959
5Ukrainian (uk)
Дерево Калкіна — Вілфа
26.4813
6French (fr)
Arbre de Calkin-Wilf
26.4187
7Russian (ru)
Дерево Калкина — Уилфа
22.3433
8Italian (it)
Albero di Calkin-Wilf
15.3798
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Calkin–Wilf tree" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Calkin–Wilf tree
157 692
2German (de)
Stern-Brocot-Folge
33 962
3Russian (ru)
Дерево Калкина — Уилфа
16 836
4French (fr)
Arbre de Calkin-Wilf
3 975
5Spanish (es)
Árbol de Calkin-Wilf
570
6Italian (it)
Albero di Calkin-Wilf
485
7Ukrainian (uk)
Дерево Калкіна — Вілфа
286
8Catalan (ca)
Arbre de Calkin-Wilf
80
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Calkin–Wilf tree" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Calkin–Wilf tree
1 482
2German (de)
Stern-Brocot-Folge
206
3Russian (ru)
Дерево Калкина — Уилфа
50
4French (fr)
Arbre de Calkin-Wilf
45
5Spanish (es)
Árbol de Calkin-Wilf
16
6Italian (it)
Albero di Calkin-Wilf
14
7Catalan (ca)
Arbre de Calkin-Wilf
9
8Ukrainian (uk)
Дерево Калкіна — Вілфа
8
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Calkin–Wilf tree" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1German (de)
Stern-Brocot-Folge
37
2English (en)
Calkin–Wilf tree
35
3French (fr)
Arbre de Calkin-Wilf
10
4Italian (it)
Albero di Calkin-Wilf
10
5Russian (ru)
Дерево Калкина — Уилфа
8
6Spanish (es)
Árbol de Calkin-Wilf
2
7Catalan (ca)
Arbre de Calkin-Wilf
1
8Ukrainian (uk)
Дерево Калкіна — Вілфа
1
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Calkin–Wilf tree" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Calkin–Wilf tree
1
2Catalan (ca)
Arbre de Calkin-Wilf
0
3German (de)
Stern-Brocot-Folge
0
4Spanish (es)
Árbol de Calkin-Wilf
0
5French (fr)
Arbre de Calkin-Wilf
0
6Italian (it)
Albero di Calkin-Wilf
0
7Russian (ru)
Дерево Калкина — Уилфа
0
8Ukrainian (uk)
Дерево Калкіна — Вілфа
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Calkin–Wilf tree" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Calkin–Wilf tree
18
2German (de)
Stern-Brocot-Folge
13
3French (fr)
Arbre de Calkin-Wilf
6
4Ukrainian (uk)
Дерево Калкіна — Вілфа
5
5Spanish (es)
Árbol de Calkin-Wilf
3
6Russian (ru)
Дерево Калкина — Уилфа
3
7Catalan (ca)
Arbre de Calkin-Wilf
2
8Italian (it)
Albero di Calkin-Wilf
2
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
caCatalan
Arbre de Calkin-Wilf
deGerman
Stern-Brocot-Folge
enEnglish
Calkin–Wilf tree
esSpanish
Árbol de Calkin-Wilf
frFrench
Arbre de Calkin-Wilf
itItalian
Albero di Calkin-Wilf
ruRussian
Дерево Калкина — Уилфа
ukUkrainian
Дерево Калкіна — Вілфа

Popularity rank trends

Best Rank English:
#122932
05.2009
Global:
#199328
05.2009

AI rank trends

Best Rank English:
#38511
05.2009
Global:
#59602
05.2015

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Calkin–Wilf tree from Wikipedia articles about Stern–Brocot tree, Fibonacci sequence, Wikipedia article, List of spirals and Rational number. Whereas reading the article about Calkin–Wilf tree people most often go to Wikipedia articles on Stern–Brocot tree, Neil Calkin, Generalized continued fraction, Minkowskis question mark function and Herbert Wilf.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 16 March 2026

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In English Wikipedia the most popular articles on that day were: 98th Academy Awards, Michael B. Jordan, Paul Thomas Anderson, Jessie Buckley, Sinners (2025 film), Amy Madigan, Autumn Durald Arkapaw, Maya Rudolph, Sean Penn, Academy Awards.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information