塞弗特-范坎彭定理

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塞弗特-范坎彭定理

Quality:

Seifert–van Kampen theorem - a theorem in topology describing the fundamental group of a space in terms of a cover of the space by two open path-connected subspaces. Article “塞弗特-范坎彭定理” in Chinese Wikipedia has 4.6 points for quality (as of July 1, 2025). The article contains 0 references and 2 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Chinese) language version.

Since the creation of article “塞弗特-范坎彭定理”, its content was written by 3 registered users of Chinese Wikipedia and edited by 190 registered Wikipedia users in all languages.

The article is cited 9 times in Chinese Wikipedia and cited 284 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Chinese): #60269 in August 2024
  • Global: #41648 in May 2004

The highest popularity rank from 2008:

  • Local (Chinese): #295559 in February 2014
  • Global: #211744 in June 2024

There are 13 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
1English (en)
Seifert–Van Kampen theorem
45.6147
2French (fr)
Théorème de van Kampen
19.5569
3Italian (it)
Teorema di Van Kampen
19.4064
4Japanese (ja)
ザイフェルト–ファン・カンペンの定理
17.1523
5Spanish (es)
Teorema de Seifert-van Kampen
16.2769
6Ukrainian (uk)
Теорема Зейферта — Ван Кампена
16.1372
7Korean (ko)
자이페르트-판 캄펀 정리
15.5303
8Hebrew (he)
משפט ואן קמפן
10.3882
9Portuguese (pt)
Teorema de Seifert-van Kampen
9.4914
10Polish (pl)
Twierdzenie Seiferta-van Kampena
8.6787
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 "塞弗特-范坎彭定理" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Seifert–Van Kampen theorem
334 565
2Italian (it)
Teorema di Van Kampen
41 560
3German (de)
Satz von Seifert und van Kampen
38 593
4Spanish (es)
Teorema de Seifert-van Kampen
23 987
5French (fr)
Théorème de van Kampen
23 237
6Japanese (ja)
ザイフェルト–ファン・カンペンの定理
18 411
7Russian (ru)
Теорема Зейферта — ван Кампена
9 430
8Chinese (zh)
塞弗特-范坎彭定理
5 552
9Hebrew (he)
משפט ואן קמפן
4 076
10Portuguese (pt)
Teorema de Seifert-van Kampen
3 655
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 "塞弗特-范坎彭定理" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Seifert–Van Kampen theorem
2 384
2Italian (it)
Teorema di Van Kampen
292
3Japanese (ja)
ザイフェルト–ファン・カンペンの定理
260
4French (fr)
Théorème de van Kampen
237
5German (de)
Satz von Seifert und van Kampen
210
6Spanish (es)
Teorema de Seifert-van Kampen
194
7Russian (ru)
Теорема Зейферта — ван Кампена
130
8Chinese (zh)
塞弗特-范坎彭定理
67
9Hebrew (he)
משפט ואן קמפן
40
10Polish (pl)
Twierdzenie Seiferta-van Kampena
34
More...

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

The highest AI

Language versions of the article "塞弗特-范坎彭定理" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Seifert–Van Kampen theorem
75
2Italian (it)
Teorema di Van Kampen
21
3French (fr)
Théorème de van Kampen
20
4German (de)
Satz von Seifert und van Kampen
18
5Spanish (es)
Teorema de Seifert-van Kampen
14
6Polish (pl)
Twierdzenie Seiferta-van Kampena
10
7Japanese (ja)
ザイフェルト–ファン・カンペンの定理
9
8Portuguese (pt)
Teorema de Seifert-van Kampen
5
9Russian (ru)
Теорема Зейферта — ван Кампена
5
10Ukrainian (uk)
Теорема Зейферта — Ван Кампена
5
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 "塞弗特-范坎彭定理" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
Satz von Seifert und van Kampen
1
2English (en)
Seifert–Van Kampen theorem
0
3Spanish (es)
Teorema de Seifert-van Kampen
0
4French (fr)
Théorème de van Kampen
0
5Hebrew (he)
משפט ואן קמפן
0
6Italian (it)
Teorema di Van Kampen
0
7Japanese (ja)
ザイフェルト–ファン・カンペンの定理
0
8Korean (ko)
자이페르트-판 캄펀 정리
0
9Polish (pl)
Twierdzenie Seiferta-van Kampena
0
10Portuguese (pt)
Teorema de Seifert-van Kampen
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 "塞弗特-范坎彭定理" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Italian (it)
Teorema di Van Kampen
143
2English (en)
Seifert–Van Kampen theorem
51
3French (fr)
Théorème de van Kampen
15
4Hebrew (he)
משפט ואן קמפן
14
5German (de)
Satz von Seifert und van Kampen
12
6Japanese (ja)
ザイフェルト–ファン・カンペンの定理
11
7Chinese (zh)
塞弗特-范坎彭定理
9
8Spanish (es)
Teorema de Seifert-van Kampen
8
9Russian (ru)
Теорема Зейферта — ван Кампена
8
10Korean (ko)
자이페르트-판 캄펀 정리
6
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
deGerman
Satz von Seifert und van Kampen
enEnglish
Seifert–Van Kampen theorem
esSpanish
Teorema de Seifert-van Kampen
frFrench
Théorème de van Kampen
heHebrew
משפט ואן קמפן
itItalian
Teorema di Van Kampen
jaJapanese
ザイフェルト–ファン・カンペンの定理
koKorean
자이페르트-판 캄펀 정리
plPolish
Twierdzenie Seiferta-van Kampena
ptPortuguese
Teorema de Seifert-van Kampen
ruRussian
Теорема Зейферта — ван Кампена
ukUkrainian
Теорема Зейферта — Ван Кампена
zhChinese
塞弗特-范坎彭定理

Popularity rank trends

Best Rank Chinese:
#295559
02.2014
Global:
#211744
06.2024

AI rank trends

Best Rank Chinese:
#60269
08.2024
Global:
#41648
05.2004

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Seifert–van Kampen theorem from Wikipedia articles about Free product, Fundamental group, Mayer–Vietoris sequence, Homotopy theory and Algebraic topology. Whereas reading the article about Seifert–van Kampen theorem people most often go to Wikipedia articles on Egbert van Kampen, Herbert Seifert, Pushout, Free product and Fundamental group.

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 Chinese Wikipedia the most popular articles on that day were: 朱由𣜬, 林岱樺, 林逸欣, 江油未成年人欺凌事件, 鬼滅之刃, 黃士修, 鬼滅之刃角色列表, 锦月如歌, 2025年亞洲盃籃球賽, 鬼滅之刃劇場版 無限城篇.

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