Non-well-founded set theory

Non-well-founded set theory - variants of axiomatic set theory that allow sets to be elements of themselves. Article "Non-well-founded set theory" in English Wikipedia has 32.8 points for quality (as of July 1, 2025). The article contains 18 references and 7 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that language version.

In June 2025 the article "Non-well-founded set theory" was edited by 1 authors in English Wikipedia and written by 1 authors in all languages.

Since the creation of article "Non-well-founded set theory", its content was written by 57 registered users of English Wikipedia and edited by 83 registered Wikipedia users in all languages.

The article is cited 40 times in English Wikipedia and cited 58 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #44825 in September 2005
• Global: #78555 in January 2004

The highest popularity rank from 2008:

• Local (English): #188093 in August 2016
• Global: #322177 in August 2016

There are 5 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	English (en) Non-well-founded set theory		32.7687
2	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		22.3886
3	French (fr) Théorie des ensembles non bien fondés		17.1579
4	Japanese (ja) 非有基的集合論		14.1487
5	Portuguese (pt) Hiperconjunto		4.113

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

The most popular language versions of the article "Non-well-founded set theory" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Non-well-founded set theory		142 821
2	Portuguese (pt) Hiperconjunto		7 993
3	French (fr) Théorie des ensembles non bien fondés		3 641
4	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		2 221
5	Japanese (ja) 非有基的集合論		710

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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 "Non-well-founded set theory" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Non-well-founded set theory		919
2	French (fr) Théorie des ensembles non bien fondés		46
3	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		32
4	Japanese (ja) 非有基的集合論		24
5	Portuguese (pt) Hiperconjunto		17

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

Language versions of the article "Non-well-founded set theory" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Non-well-founded set theory		57
2	French (fr) Théorie des ensembles non bien fondés		10
3	Portuguese (pt) Hiperconjunto		10
4	Japanese (ja) 非有基的集合論		4
5	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		2

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

Language versions of the article "Non-well-founded set theory" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	English (en) Non-well-founded set theory		1
2	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		0
3	French (fr) Théorie des ensembles non bien fondés		0
4	Japanese (ja) 非有基的集合論		0
5	Portuguese (pt) Hiperconjunto		0

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

Language versions of the article "Non-well-founded set theory" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Non-well-founded set theory		40
2	French (fr) Théorie des ensembles non bien fondés		5
3	Japanese (ja) 非有基的集合論		5
4	Persian (fa) نظریه مجموعه‌های ناخوش‌بنیان		4
5	Portuguese (pt) Hiperconjunto		4

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#	Language	Value
en	English Non-well-founded set theory
fa	Persian نظریه مجموعه‌های ناخوش‌بنیان
fr	French Théorie des ensembles non bien fondés
ja	Japanese 非有基的集合論
pt	Portuguese Hiperconjunto

Best Rank

English: #188093 08.2016

Global: #322177 08.2016

Best Rank

English: #44825 09.2005

Global: #78555 01.2004

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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