Выворачивание сферы

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Выворачивание сферы

Quality:

Sphere eversion - topological operation of turning a sphere inside-out without creasing. Article "Выворачивание сферы" in Russian Wikipedia has 16 points for quality (as of July 1, 2025). The article contains 3 references and 7 sections.

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

Since the creation of article "Выворачивание сферы", its content was written by 30 registered users of Russian Wikipedia and edited by 173 registered Wikipedia users in all languages.

The article is cited 10 times in Russian Wikipedia and cited 224 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Russian): #837 in April 2005
  • Global: #31486 in February 2004

The highest popularity rank from 2008:

  • Local (Russian): #12680 in September 2009
  • Global: #166827 in September 2015

There are 10 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)
Umstülpung der Sphäre
73.3333
2English (en)
Sphere eversion
39.6342
3Korean (ko)
구면 뒤집기
33.2883
4Slovenian (sl)
Smaleov paradoks
20.0729
5Ukrainian (uk)
Парадокс Смейла
19.4503
6French (fr)
Retournement de la sphère
18.0616
7Russian (ru)
Выворачивание сферы
15.9949
8Chinese (zh)
斯梅爾悖論
7.1969
9Italian (it)
Eversione della sfera
5.0198
10Spanish (es)
Eversión de la esfera
2.5133
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 "Выворачивание сферы" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Sphere eversion
556 941
2Russian (ru)
Выворачивание сферы
121 331
3French (fr)
Retournement de la sphère
23 034
4Italian (it)
Eversione della sfera
19 037
5Spanish (es)
Eversión de la esfera
16 983
6Chinese (zh)
斯梅爾悖論
9 481
7Slovenian (sl)
Smaleov paradoks
3 148
8German (de)
Umstülpung der Sphäre
3 128
9Korean (ko)
구면 뒤집기
2 335
10Ukrainian (uk)
Парадокс Смейла
1 537
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 "Выворачивание сферы" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Sphere eversion
2 421
2Russian (ru)
Выворачивание сферы
381
3French (fr)
Retournement de la sphère
136
4Chinese (zh)
斯梅爾悖論
81
5German (de)
Umstülpung der Sphäre
74
6Korean (ko)
구면 뒤집기
53
7Slovenian (sl)
Smaleov paradoks
45
8Italian (it)
Eversione della sfera
38
9Spanish (es)
Eversión de la esfera
24
10Ukrainian (uk)
Парадокс Смейла
5
More...

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

The highest AI

Language versions of the article "Выворачивание сферы" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Sphere eversion
88
2Russian (ru)
Выворачивание сферы
30
3Italian (it)
Eversione della sfera
14
4French (fr)
Retournement de la sphère
10
5German (de)
Umstülpung der Sphäre
7
6Korean (ko)
구면 뒤집기
7
7Spanish (es)
Eversión de la esfera
6
8Chinese (zh)
斯梅爾悖論
5
9Slovenian (sl)
Smaleov paradoks
3
10Ukrainian (uk)
Парадокс Смейла
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 "Выворачивание сферы" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
Umstülpung der Sphäre
0
2English (en)
Sphere eversion
0
3Spanish (es)
Eversión de la esfera
0
4French (fr)
Retournement de la sphère
0
5Italian (it)
Eversione della sfera
0
6Korean (ko)
구면 뒤집기
0
7Russian (ru)
Выворачивание сферы
0
8Slovenian (sl)
Smaleov paradoks
0
9Ukrainian (uk)
Парадокс Смейла
0
10Chinese (zh)
斯梅爾悖論
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 "Выворачивание сферы" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Italian (it)
Eversione della sfera
140
2English (en)
Sphere eversion
33
3French (fr)
Retournement de la sphère
11
4Russian (ru)
Выворачивание сферы
10
5Spanish (es)
Eversión de la esfera
9
6Ukrainian (uk)
Парадокс Смейла
7
7Chinese (zh)
斯梅爾悖論
6
8German (de)
Umstülpung der Sphäre
4
9Slovenian (sl)
Smaleov paradoks
4
10Korean (ko)
구면 뒤집기
0
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
deGerman
Umstülpung der Sphäre
enEnglish
Sphere eversion
esSpanish
Eversión de la esfera
frFrench
Retournement de la sphère
itItalian
Eversione della sfera
koKorean
구면 뒤집기
ruRussian
Выворачивание сферы
slSlovenian
Smaleov paradoks
ukUkrainian
Парадокс Смейла
zhChinese
斯梅爾悖論

Popularity rank trends

Best Rank Russian:
#12680
09.2009
Global:
#166827
09.2015

AI rank trends

Best Rank Russian:
#837
04.2005
Global:
#31486
02.2004

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Sphere eversion from Wikipedia articles about List of paradoxes, Paradox, Sphere, Morin surface and Stephen Smale. Whereas reading the article about Sphere eversion people most often go to Wikipedia articles on Regular homotopy, Paradox, Morin surface, Inversive geometry and Bernard Morin.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 12 August 2025

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In Russian Wikipedia the most popular articles on that day were: Яндекс, Главы Курска, Анкоридж, Аляска, Уэнздей (2-й сезон), Катастрофа АПЛ «Курск», Бутусов, Юрий Николаевич, Продажа Аляски, К-141 «Курск», Корж, Макс.

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