Teorema di Barbier

it

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Teorema di Barbier

Quality:

Barbier's theorem - theorem that every curve of constant width has perimeter π times its width. Article “Teorema di Barbier” in Italian Wikipedia has 3.8 points for quality (as of July 1, 2025). The article contains 0 references and 3 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.2 points.

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

Since the creation of article “Teorema di Barbier”, its content was written by 21 registered users of Italian Wikipedia and edited by 114 registered Wikipedia users in all languages.

The article is cited 2 times in Italian Wikipedia and cited 48 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Italian): #23243 in August 2010
  • Global: #93228 in October 2011

The highest popularity rank from 2008:

  • Local (Italian): #453301 in January 2011
  • Global: #764053 in June 2018

There are 14 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
1Turkish (tr)
Barbier teoremi
26.1515
2Polish (pl)
Twierdzenie Barbiera
23.0183
3English (en)
Barbier's theorem
22.239
4Armenian (hy)
Բարբիեի թեորեմ
20.6688
5Ukrainian (uk)
Теорема Барб'є
20.2871
6Portuguese (pt)
Teorema de Barbier
19.3777
7Romanian (ro)
Teorema lui Barbier
18.9232
8Russian (ru)
Теорема Барбье
16.3529
9French (fr)
Théorème de Barbier
16.2183
10Spanish (es)
Teorema de Barbier
11.1571
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 "Teorema di Barbier" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Barbier's theorem
61 777
2Spanish (es)
Teorema de Barbier
13 420
3Korean (ko)
바르비에의 정리
12 990
4Russian (ru)
Теорема Барбье
9 728
5Italian (it)
Teorema di Barbier
4 257
6French (fr)
Théorème de Barbier
3 705
7Polish (pl)
Twierdzenie Barbiera
3 622
8Portuguese (pt)
Teorema de Barbier
1 870
9Esperanto (eo)
Teoremo de Barbier
1 831
10Ukrainian (uk)
Теорема Барб'є
1 428
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 "Teorema di Barbier" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Barbier's theorem
484
2French (fr)
Théorème de Barbier
80
3Turkish (tr)
Barbier teoremi
39
4Russian (ru)
Теорема Барбье
36
5Korean (ko)
바르비에의 정리
21
6Polish (pl)
Twierdzenie Barbiera
19
7Spanish (es)
Teorema de Barbier
17
8German (de)
Satz von Barbier
15
9Italian (it)
Teorema di Barbier
15
10Portuguese (pt)
Teorema de Barbier
15
More...

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

The highest AI

Language versions of the article "Teorema di Barbier" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Barbier's theorem
22
2Italian (it)
Teorema di Barbier
21
3Russian (ru)
Теорема Барбье
15
4French (fr)
Théorème de Barbier
11
5Spanish (es)
Teorema de Barbier
8
6Ukrainian (uk)
Теорема Барб'є
7
7German (de)
Satz von Barbier
6
8Polish (pl)
Twierdzenie Barbiera
6
9Esperanto (eo)
Teoremo de Barbier
5
10Armenian (hy)
Բարբիեի թեորեմ
3
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 "Teorema di Barbier" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
Satz von Barbier
0
2English (en)
Barbier's theorem
0
3Esperanto (eo)
Teoremo de Barbier
0
4Spanish (es)
Teorema de Barbier
0
5French (fr)
Théorème de Barbier
0
6Armenian (hy)
Բարբիեի թեորեմ
0
7Italian (it)
Teorema di Barbier
0
8Korean (ko)
바르비에의 정리
0
9Polish (pl)
Twierdzenie Barbiera
0
10Portuguese (pt)
Teorema de Barbier
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 "Teorema di Barbier" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Barbier's theorem
16
2French (fr)
Théorème de Barbier
6
3Korean (ko)
바르비에의 정리
5
4Russian (ru)
Теорема Барбье
4
5Turkish (tr)
Barbier teoremi
4
6Spanish (es)
Teorema de Barbier
3
7Polish (pl)
Twierdzenie Barbiera
3
8Italian (it)
Teorema di Barbier
2
9Portuguese (pt)
Teorema de Barbier
2
10German (de)
Satz von Barbier
1
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
deGerman
Satz von Barbier
enEnglish
Barbier's theorem
eoEsperanto
Teoremo de Barbier
esSpanish
Teorema de Barbier
frFrench
Théorème de Barbier
hyArmenian
Բարբիեի թեորեմ
itItalian
Teorema di Barbier
koKorean
바르비에의 정리
plPolish
Twierdzenie Barbiera
ptPortuguese
Teorema de Barbier
roRomanian
Teorema lui Barbier
ruRussian
Теорема Барбье
trTurkish
Barbier teoremi
ukUkrainian
Теорема Барб'є

Popularity rank trends

Best Rank Italian:
#453301
01.2011
Global:
#764053
06.2018

AI rank trends

Best Rank Italian:
#23243
08.2010
Global:
#93228
10.2011

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Barbier's theorem from Wikipedia articles about Curve of constant width, Buffon’s noodle, List of theorems, Minkowski addition and Reuleaux triangle. Whereas reading the article about Barbier's theorem people most often go to Wikipedia articles on Buffon’s noodle, Crofton formula, Curve of constant width, Minkowski addition and Body of constant brightness.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 10 March 2026

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In Italian Wikipedia the most popular articles on that day were: Le libere donne, Giusi Bartolozzi, Mario Tobino, Guerrieri - La regola dell'equilibrio, Le libere donne di Magliano, Episodi di Mare fuori (sesta stagione), One Piece (serie televisiva), Daniele Scardina, Storia d'inverno, Rai.

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