Sigma-álxebra

Quality:

Sigma-algebra - algebraic structure closed under numerable union, intersection, and complement.. Article "Sigma-álxebra" in Galician Wikipedia has 15.1 points for quality (as of July 1, 2025). The article contains 1 references and 12 sections.

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

Since the creation of article "Sigma-álxebra", its content was written by 4 registered users of Galician Wikipedia and edited by 984 registered Wikipedia users in all languages.

The article is cited 22 times in Galician Wikipedia and cited 1999 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Galician): #31 in July 2024
• Global: #1581 in February 2002

The highest popularity rank from 2008:

• Local (Galician): #1335 in July 2024
• Global: #8760 in October 2015

There are 34 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.

#	Language	Quality grade	Quality score
1	French (fr) Tribu (mathématiques)		42.5934
2	Turkish (tr) Σ-cebiri		36.781
3	English (en) Σ-algebra		35.5743
4	Korean (ko) 시그마 대수		33.4134
5	Portuguese (pt) Sigma-álgebra		32.5085
6	German (de) Σ-Algebra		30.9725
7	Polish (pl) Przestrzeń mierzalna		28.0853
8	Catalan (ca) Σ-àlgebra		26.4108
9	Hungarian (hu) Σ-algebra		20.632
10	Chinese (zh) Σ-代数		19.5591

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

#	Language	Popularity award	Relative popularity
1	English (en) Σ-algebra		2 880 555
2	German (de) Σ-Algebra		723 632
3	French (fr) Tribu (mathématiques)		527 208
4	Russian (ru) Сигма-алгебра		378 537
5	Spanish (es) Σ-álgebra		328 687
6	Italian (it) Sigma-algebra		293 015
7	Polish (pl) Przestrzeń mierzalna		259 835
8	Japanese (ja) 完全加法族		231 135
9	Chinese (zh) Σ-代数		203 911
10	Vietnamese (vi) Đại số sigma		77 042

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

#	Language	Popularity award	Relative popularity
1	English (en) Σ-algebra		10 778
2	Russian (ru) Сигма-алгебра		1 794
3	French (fr) Tribu (mathématiques)		1 601
4	German (de) Σ-Algebra		1 574
5	Chinese (zh) Σ-代数		828
6	Italian (it) Sigma-algebra		764
7	Japanese (ja) 完全加法族		760
8	Polish (pl) Przestrzeń mierzalna		628
9	Spanish (es) Σ-álgebra		445
10	Portuguese (pt) Sigma-álgebra		201

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

#	Language	AI award	Relative AI
1	English (en) Σ-algebra		213
2	German (de) Σ-Algebra		111
3	French (fr) Tribu (mathématiques)		106
4	Italian (it) Sigma-algebra		63
5	Russian (ru) Сигма-алгебра		45
6	Polish (pl) Przestrzeń mierzalna		40
7	Norwegian (no) Σ-algebra		37
8	Chinese (zh) Σ-代数		36
9	Hebrew (he) סיגמא-אלגברה		32
10	Spanish (es) Σ-álgebra		26

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

#	Language	AI award	Relative AI
1	English (en) Σ-algebra		3
2	French (fr) Tribu (mathématiques)		1
3	Russian (ru) Сигма-алгебра		1
4	Belarusian (be) Сігма-алгебра		0
5	Bulgarian (bg) Сигма-алгебра		0
6	Catalan (ca) Σ-àlgebra		0
7	Czech (cs) Sigma algebra		0
8	Danish (da) Sigma-algebra		0
9	German (de) Σ-Algebra		0
10	Greek (el) Σ-άλγεβρα		0

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

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 Galician Wikipedia the most popular articles on that day were: Moncho Reboiras, Francisco Rodríguez Rodríguez, Uxía Oviedo, Roi Casal, Castro, Cerdedo-Cotobade, Marta Nóvoa, The Artist, Elvira Souto, Roberto Castro Rocamonde, Sonsoles Espinosa.

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