Class (set theory)

Class - mathematical collection of sets that can be defined based on a property of its members (set theory). Article “Class (set theory)” in English Wikipedia has 19.4 points for quality (as of July 1, 2026). The article contains 4 references and 6 sections.

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

Since the creation of article “Class (set theory)”, its content was written by 101 registered users of English Wikipedia and edited by 548 registered Wikipedia users in all languages.

The article is cited 597 times in English Wikipedia and cited 2801 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #782 in December 2001
• Global: #828 in December 2001

The highest popularity rank from 2008:

• Local (English): #136184 in November 2014
• Global: #137016 in November 2014

There are 32 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, 2026 (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	Tamil (ta) தொகுதி (கணக் கோட்பாடு)		26.1756
2	Catalan (ca) Classe (matemàtiques)		19.3608
3	English (en) Class (set theory)		19.3514
4	German (de) Klasse (Mengenlehre)		17.2718
5	Indonesian (id) Kelas (teori himpunan)		16.2321
6	Polish (pl) Klasa (matematyka)		15.3896
7	French (fr) Classe (mathématiques)		15.2145
8	Vietnamese (vi) Lớp (lý thuyết tập hợp)		15.0393
9	Croatian (hr) Klasa (matematika)		12.644
10	Hungarian (hu) Osztály (halmazelmélet)		8.8064

More...

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

The most popular language versions of the article "Class (set theory)" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Class (set theory)		952 128
2	German (de) Klasse (Mengenlehre)		227 093
3	Spanish (es) Clase (teoría de conjuntos)		152 685
4	French (fr) Classe (mathématiques)		114 124
5	Japanese (ja) クラス (集合論)		107 948
6	Russian (ru) Класс (математика)		104 600
7	Polish (pl) Klasa (matematyka)		86 745
8	Chinese (zh) 类 (数学)		72 834
9	Italian (it) Classe (matematica)		58 540
10	Korean (ko) 모임 (집합론)		33 364

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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 "Class (set theory)" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Class (set theory)		3 335
2	German (de) Klasse (Mengenlehre)		642
3	Japanese (ja) クラス (集合論)		579
4	Russian (ru) Класс (математика)		268
5	French (fr) Classe (mathématiques)		266
6	Chinese (zh) 类 (数学)		257
7	Polish (pl) Klasa (matematyka)		179
8	Spanish (es) Clase (teoría de conjuntos)		123
9	Italian (it) Classe (matematica)		98
10	Czech (cs) Třída (matematika)		78

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

Language versions of the article "Class (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) Class (set theory)		101
2	German (de) Klasse (Mengenlehre)		90
3	French (fr) Classe (mathématiques)		53
4	Russian (ru) Класс (математика)		37
5	Italian (it) Classe (matematica)		35
6	Polish (pl) Klasa (matematyka)		32
7	Chinese (zh) 类 (数学)		27
8	Dutch (nl) Klasse (verzamelingenleer)		20
9	Hungarian (hu) Osztály (halmazelmélet)		19
10	Czech (cs) Třída (matematika)		13

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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 "Class (set theory)" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Catalan (ca) Classe (matemàtiques)		0
2	Czech (cs) Třída (matematika)		0
3	Danish (da) Klasse (matematik)		0
4	German (de) Klasse (Mengenlehre)		0
5	English (en) Class (set theory)		0
6	Spanish (es) Clase (teoría de conjuntos)		0
7	Estonian (et) Klass (matemaatika)		0
8	Persian (fa) کلاس (نظریه مجموعه‌ها)		0
9	Finnish (fi) Luokka (matematiikka)		0
10	French (fr) Classe (mathématiques)		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 "Class (set theory)" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Class (set theory)		597
2	Japanese (ja) クラス (集合論)		247
3	Portuguese (pt) Classe (teoria dos conjuntos)		228
4	Ukrainian (uk) Клас (теорія множин)		217
5	Chinese (zh) 类 (数学)		207
6	Korean (ko) 모임 (집합론)		192
7	German (de) Klasse (Mengenlehre)		126
8	Russian (ru) Класс (математика)		115
9	Polish (pl) Klasa (matematyka)		106
10	French (fr) Classe (mathématiques)		103

More...

#	Language	Value
ca	Catalan Classe (matemàtiques)
cs	Czech Třída (matematika)
da	Danish Klasse (matematik)
de	German Klasse (Mengenlehre)
en	English Class (set theory)
es	Spanish Clase (teoría de conjuntos)
et	Estonian Klass (matemaatika)
fa	Persian کلاس (نظریه مجموعه‌ها)
fi	Finnish Luokka (matematiikka)
fr	French Classe (mathématiques)
he	Hebrew מחלקה (תורת הקבוצות)
hr	Croatian Klasa (matematika)
hu	Hungarian Osztály (halmazelmélet)
hy	Armenian Դաս (բազմությունների տեսություն)
id	Indonesian Kelas (teori himpunan)
it	Italian Classe (matematica)
ja	Japanese クラス (集合論)
ko	Korean 모임 (집합론)
nl	Dutch Klasse (verzamelingenleer)
nn	Norwegian (Nynorsk) Klasse i matematikk
pl	Polish Klasa (matematyka)
pt	Portuguese Classe (teoria dos conjuntos)
ro	Romanian Clasă (matematică)
ru	Russian Класс (математика)
simple	Simple English Class (set theory)
sl	Slovenian Razred (teorija množic)
sv	Swedish Klass (matematik)
ta	Tamil தொகுதி (கணக் கோட்பாடு)
th	Thai ชั้น (ทฤษฎีเซต)
uk	Ukrainian Клас (теорія множин)
vi	Vietnamese Lớp (lý thuyết tập hợp)
zh	Chinese 类 (数学)

Best Rank

English: #136184 11.2014

Global: #137016 11.2014

Best Rank

English: #782 12.2001

Global: #828 12.2001

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information