Complement (set theory)

Complement - unary operation on sets: the set of non-elements of the argument set. Article "Complement (set theory)" in English Wikipedia has 47.7 points for quality (as of July 1, 2025). The article contains 10 references and 14 sections.

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

Since the creation of article "Complement (set theory)", its content was written by 181 registered users of English Wikipedia and edited by 770 registered Wikipedia users in all languages.

The article is cited 729 times in English Wikipedia and cited 3296 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #6138 in April 2002
• Global: #7005 in May 2003

The highest popularity rank from 2008:

• Local (English): #20258 in June 2013
• Global: #26925 in September 2018

There are 38 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	Malay (ms) Pelengkap (teori set)		67.8225
2	Indonesian (id) Komplemen (teori himpunan)		51.1664
3	English (en) Complement (set theory)		47.745
4	Portuguese (pt) Complementar		44.8092
5	Vietnamese (vi) Phần bù (lý thuyết tập hợp)		40.6611
6	Romanian (ro) Complementară		39.7271
7	Tamil (ta) நிரப்பு கணம்		36.2059
8	German (de) Komplement (Mengenlehre)		34.3191
9	Polish (pl) Dopełnienie zbioru		33.8084
10	Galician (gl) Complementario (conxuntos)		30.1912

More...

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

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

#	Language	Popularity award	Relative popularity
1	English (en) Complement (set theory)		2 968 267
2	Spanish (es) Complemento de un conjunto		2 204 249
3	Russian (ru) Разность множеств		530 607
4	German (de) Komplement (Mengenlehre)		518 895
5	Japanese (ja) 差集合		270 452
6	Chinese (zh) 补集		259 696
7	French (fr) Complémentaire (théorie des ensembles)		249 842
8	Portuguese (pt) Complementar		227 441
9	Italian (it) Insieme complemento		208 912
10	Polish (pl) Dopełnienie zbioru		173 135

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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 "Complement (set theory)" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Complement (set theory)		5 056
2	Spanish (es) Complemento de un conjunto		937
3	Chinese (zh) 补集		937
4	Japanese (ja) 差集合		800
5	Russian (ru) Разность множеств		798
6	German (de) Komplement (Mengenlehre)		613
7	French (fr) Complémentaire (théorie des ensembles)		433
8	Korean (ko) 여집합		429
9	Vietnamese (vi) Phần bù (lý thuyết tập hợp)		353
10	Thai (th) ส่วนเติมเต็ม		226

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

Language versions of the article "Complement (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) Complement (set theory)		181
2	German (de) Komplement (Mengenlehre)		73
3	Italian (it) Insieme complemento		60
4	Spanish (es) Complemento de un conjunto		45
5	French (fr) Complémentaire (théorie des ensembles)		43
6	Russian (ru) Разность множеств		41
7	Dutch (nl) Complement (verzamelingenleer)		32
8	Japanese (ja) 差集合		31
9	Hebrew (he) משלים (מתמטיקה)		30
10	Polish (pl) Dopełnienie zbioru		27

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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 "Complement (set theory)" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Estonian (et) Täiend (hulgateooria)		1
2	Russian (ru) Разность множеств		1
3	Arabic (ar) مجموعة مكملة (نظرية المجموعات)		0
4	Belarusian (be) Дапаўненне мностваў		0
5	Bulgarian (bg) Разлика (теория на множествата)		0
6	Catalan (ca) Complementari		0
7	Czech (cs) Doplněk množiny		0
8	German (de) Komplement (Mengenlehre)		0
9	Greek (el) Συμπλήρωμα (θεωρία συνόλων)		0
10	English (en) Complement (set theory)		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 "Complement (set theory)" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Complement (set theory)		729
2	French (fr) Complémentaire (théorie des ensembles)		307
3	Chinese (zh) 补集		224
4	Japanese (ja) 差集合		185
5	Russian (ru) Разность множеств		168
6	German (de) Komplement (Mengenlehre)		164
7	Ukrainian (uk) Доповнення множин		156
8	Korean (ko) 여집합		150
9	Polish (pl) Dopełnienie zbioru		119
10	Hebrew (he) משלים (מתמטיקה)		110

More...

#	Language	Value
ar	Arabic مجموعة مكملة (نظرية المجموعات)
be	Belarusian Дапаўненне мностваў
bg	Bulgarian Разлика (теория на множествата)
ca	Catalan Complementari
cs	Czech Doplněk množiny
de	German Komplement (Mengenlehre)
el	Greek Συμπλήρωμα (θεωρία συνόλων)
en	English Complement (set theory)
eo	Esperanto Komplemento (aroteorio)
es	Spanish Complemento de un conjunto
et	Estonian Täiend (hulgateooria)
eu	Basque Osagarri (multzo-teoria)
fa	Persian متمم (نظریه مجموعه‌ها)
fi	Finnish Komplementti (joukko-oppi)
fr	French Complémentaire (théorie des ensembles)
gl	Galician Complementario (conxuntos)
he	Hebrew משלים (מתמטיקה)
hr	Croatian Komplement skupa
id	Indonesian Komplemen (teori himpunan)
it	Italian Insieme complemento
ja	Japanese 差集合
ko	Korean 여집합
ms	Malay Pelengkap (teori set)
nl	Dutch Complement (verzamelingenleer)
nn	Norwegian (Nynorsk) Komplement i mengdelære
no	Norwegian Komplement (mengdelære)
pl	Polish Dopełnienie zbioru
pt	Portuguese Complementar
ro	Romanian Complementară
ru	Russian Разность множеств
sk	Slovak Doplnok (množiny)
sl	Slovenian Komplement množice
sv	Swedish Komplement
ta	Tamil நிரப்பு கணம்
th	Thai ส่วนเติมเต็ม
uk	Ukrainian Доповнення множин
vi	Vietnamese Phần bù (lý thuyết tập hợp)
zh	Chinese 补集

Best Rank

English: #20258 06.2013

Global: #26925 09.2018

Best Rank

English: #6138 04.2002

Global: #7005 05.2003

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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