Sigma okruh

Sigma-ring - Family closed under countable unions and relative complements. Article “Sigma okruh” in Czech Wikipedia has 4.3 points for quality (as of July 1, 2025). The article contains 0 references and 4 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 “Sigma okruh”, its content was written by 4 registered users of Czech Wikipedia and edited by 62 registered Wikipedia users in all languages.

The article is cited 7 times in Czech Wikipedia and cited 103 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Czech): #628 in December 2013
• Global: #141989 in July 2010

The highest popularity rank from 2008:

• Local (Czech): #92810 in December 2013
• Global: #1128923 in October 2011

There are 9 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	German (de) Σ-Ring		17.6788
2	French (fr) Sigma-anneau		14.3522
3	Japanese (ja) Σ集合環		12.3809
4	English (en) Sigma-ring		9.9295
5	Chinese (zh) Σ环		6.9304
6	Polish (pl) Σ-pierścień		5.9655
7	Ukrainian (uk) Сигма-кільце		4.8675
8	Czech (cs) Sigma okruh		4.266
9	Slovak (sk) Sigma-okruh		0.409

More...

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

The most popular language versions of the article "Sigma okruh" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Sigma-ring		77 092
2	German (de) Σ-Ring		11 033
3	Japanese (ja) Σ集合環		8 779
4	French (fr) Sigma-anneau		8 385
5	Polish (pl) Σ-pierścień		7 652
6	Slovak (sk) Sigma-okruh		2 665
7	Czech (cs) Sigma okruh		2 183
8	Ukrainian (uk) Сигма-кільце		524
9	Chinese (zh) Σ环		505

More...

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 "Sigma okruh" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Sigma-ring		305
2	Chinese (zh) Σ环		37
3	Japanese (ja) Σ集合環		31
4	German (de) Σ-Ring		25
5	Czech (cs) Sigma okruh		15
6	Polish (pl) Σ-pierścień		9
7	French (fr) Sigma-anneau		6
8	Slovak (sk) Sigma-okruh		4
9	Ukrainian (uk) Сигма-кільце		4

More...

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

Language versions of the article "Sigma okruh" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Sigma-ring		19
2	French (fr) Sigma-anneau		13
3	German (de) Σ-Ring		8
4	Polish (pl) Σ-pierścień		6
5	Japanese (ja) Σ集合環		5
6	Czech (cs) Sigma okruh		4
7	Chinese (zh) Σ环		3
8	Slovak (sk) Sigma-okruh		2
9	Ukrainian (uk) Сигма-кільце		2

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 "Sigma okruh" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Czech (cs) Sigma okruh		0
2	German (de) Σ-Ring		0
3	English (en) Sigma-ring		0
4	French (fr) Sigma-anneau		0
5	Japanese (ja) Σ集合環		0
6	Polish (pl) Σ-pierścień		0
7	Slovak (sk) Sigma-okruh		0
8	Ukrainian (uk) Сигма-кільце		0
9	Chinese (zh) Σ环		0

More...

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

Language versions of the article "Sigma okruh" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	Polish (pl) Σ-pierścień		31
2	English (en) Sigma-ring		24
3	Japanese (ja) Σ集合環		12
4	German (de) Σ-Ring		10
5	Czech (cs) Sigma okruh		7
6	French (fr) Sigma-anneau		7
7	Ukrainian (uk) Сигма-кільце		7
8	Slovak (sk) Sigma-okruh		4
9	Chinese (zh) Σ环		1

More...

#	Language	Value
cs	Czech Sigma okruh
de	German Σ-Ring
en	English Sigma-ring
fr	French Sigma-anneau
ja	Japanese Σ集合環
pl	Polish Σ-pierścień
sk	Slovak Sigma-okruh
uk	Ukrainian Сигма-кільце
zh	Chinese Σ环

Best Rank

Czech: #92810 12.2013

Global: #1128923 10.2011

Best Rank

Czech: #628 12.2013

Global: #141989 07.2010

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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