完全加法族

Sigma-algebra - algebraic structure closed under numerable union, intersection, and complement.. Article "完全加法族" in Japanese Wikipedia has 12.2 points for quality (as of July 1, 2025). The article contains 5 references and 10 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 "完全加法族", its content was written by 21 registered users of Japanese Wikipedia and edited by 984 registered Wikipedia users in all languages.

The article is cited 104 times in Japanese Wikipedia and cited 1999 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #14131 in October 2014
• Global: #1581 in February 2002

The highest popularity rank from 2008:

• Local (Japanese): #80364 in April 2021
• 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

More...

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

The most popular language versions of the article "完全加法族" in all the time

#	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

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

The most popular language versions of the article "完全加法族" in June 2025

#	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

More...

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

Language versions of the article "完全加法族" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	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

More...

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

Language versions of the article "完全加法族" with the highest AI in June 2025

#	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

More...

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

Language versions of the article "完全加法族" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Σ-algebra		382
2	French (fr) Tribu (mathématiques)		316
3	German (de) Σ-Algebra		186
4	Polish (pl) Przestrzeń mierzalna		169
5	Japanese (ja) 完全加法族		104
6	Italian (it) Sigma-algebra		96
7	Spanish (es) Σ-álgebra		76
8	Chinese (zh) Σ-代数		66
9	Hebrew (he) סיגמא-אלגברה		52
10	Korean (ko) 시그마 대수		50

More...

#	Language	Value
be	Belarusian Сігма-алгебра
bg	Bulgarian Сигма-алгебра
ca	Catalan Σ-àlgebra
cs	Czech Sigma algebra
da	Danish Sigma-algebra
de	German Σ-Algebra
el	Greek Σ-άλγεβρα
en	English Σ-algebra
eo	Esperanto Sigma-alĝebro
es	Spanish Σ-álgebra
fa	Persian جبر سیگما
fi	Finnish Sigma-algebra
fr	French Tribu (mathématiques)
gl	Galician Sigma-álxebra
he	Hebrew סיגמא-אלגברה
hu	Hungarian Σ-algebra
id	Indonesian Aljabar sigma
it	Italian Sigma-algebra
ja	Japanese 完全加法族
ka	Georgian სიგმა-ალგებრა
ko	Korean 시그마 대수
nl	Dutch Sigma-algebra
no	Norwegian Σ-algebra
pl	Polish Przestrzeń mierzalna
pt	Portuguese Sigma-álgebra
ro	Romanian Sigma-algebră
ru	Russian Сигма-алгебра
sk	Slovak Sigma-algebra
sv	Swedish Sigma-algebra
th	Thai พีชคณิตซิกมา
tr	Turkish Σ-cebiri
uk	Ukrainian Сигма-алгебра
vi	Vietnamese Đại số sigma
zh	Chinese Σ-代数

Best Rank

Japanese: #80364 04.2021

Global: #8760 10.2015

Best Rank

Japanese: #14131 10.2014

Global: #1581 02.2002

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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