Closed set

Closed set - set whose complement is an open set. Article “Closed set” in English Wikipedia has 24.1 points for quality (as of July 1, 2026). The article contains 2 references and 9 sections.

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

In June 2026 the article “Closed set” was edited by 2 authors in English Wikipedia and written by 3 authors in all languages.

Since the creation of article “Closed set”, its content was written by 100 registered users of English Wikipedia and edited by 509 registered Wikipedia users in all languages.

The article is cited 512 times in English Wikipedia and cited 3318 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #2543 in June 2002
• Global: #3258 in June 2002

The highest popularity rank from 2008:

• Local (English): #99007 in October 2014
• Global: #77335 in October 2014

There are 29 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	Portuguese (pt) Conjunto fechado		31.0692
2	Galician (gl) Conxunto pechado		27.7077
3	English (en) Closed set		24.1294
4	Estonian (et) Kinnine hulk		23.8601
5	Arabic (ar) مجموعة مغلقة		20.2186
6	German (de) Abgeschlossene Menge		20.0701
7	Bulgarian (bg) Затворено множество		16.2791
8	Chinese (zh) 闭集		13.5486
9	Polish (pl) Zbiór domknięty		13.41
10	Vietnamese (vi) Tập đóng		13.2026

More...

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

The most popular language versions of the article "Closed set" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Closed set		1 370 254
2	German (de) Abgeschlossene Menge		569 102
3	Russian (ru) Замкнутое множество		313 591
4	Spanish (es) Conjunto cerrado		274 140
5	French (fr) Fermé (topologie)		174 606
6	Italian (it) Insieme chiuso		155 077
7	Japanese (ja) 閉集合		124 614
8	Polish (pl) Zbiór domknięty		122 665
9	Chinese (zh) 闭集		98 491
10	Portuguese (pt) Conjunto fechado		97 993

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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 "Closed set" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Closed set		2 268
2	German (de) Abgeschlossene Menge		796
3	Russian (ru) Замкнутое множество		365
4	Japanese (ja) 閉集合		257
5	French (fr) Fermé (topologie)		253
6	Chinese (zh) 闭集		194
7	Polish (pl) Zbiór domknięty		149
8	Italian (it) Insieme chiuso		137
9	Persian (fa) مجموعه بسته		135
10	Spanish (es) Conjunto cerrado		133

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

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

#	Language	AI award	Relative AI
1	English (en) Closed set		100
2	German (de) Abgeschlossene Menge		61
3	Russian (ru) Замкнутое множество		40
4	Italian (it) Insieme chiuso		36
5	French (fr) Fermé (topologie)		29
6	Dutch (nl) Gesloten verzameling		24
7	Spanish (es) Conjunto cerrado		22
8	Hebrew (he) קבוצה סגורה		20
9	Polish (pl) Zbiór domknięty		20
10	Finnish (fi) Suljettu joukko		19

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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 "Closed set" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) Closed set		2
2	Bulgarian (bg) Затворено множество		1
3	Arabic (ar) مجموعة مغلقة		0
4	Catalan (ca) Conjunt tancat		0
5	Czech (cs) Uzavřená množina		0
6	German (de) Abgeschlossene Menge		0
7	Esperanto (eo) Fermita aro		0
8	Spanish (es) Conjunto cerrado		0
9	Estonian (et) Kinnine hulk		0
10	Persian (fa) مجموعه بسته		0

More...

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

Language versions of the article "Closed set" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Closed set		512
2	Italian (it) Insieme chiuso		342
3	French (fr) Fermé (topologie)		297
4	German (de) Abgeschlossene Menge		290
5	Polish (pl) Zbiór domknięty		205
6	Japanese (ja) 閉集合		192
7	Chinese (zh) 闭集		179
8	Ukrainian (uk) Замкнута множина		176
9	Hebrew (he) קבוצה סגורה		173
10	Spanish (es) Conjunto cerrado		171

More...

#	Language	Value
ar	Arabic مجموعة مغلقة
bg	Bulgarian Затворено множество
ca	Catalan Conjunt tancat
cs	Czech Uzavřená množina
de	German Abgeschlossene Menge
en	English Closed set
eo	Esperanto Fermita aro
es	Spanish Conjunto cerrado
et	Estonian Kinnine hulk
fa	Persian مجموعه بسته
fi	Finnish Suljettu joukko
fr	French Fermé (topologie)
gl	Galician Conxunto pechado
he	Hebrew קבוצה סגורה
hu	Hungarian Zárt halmaz
it	Italian Insieme chiuso
ja	Japanese 閉集合
ka	Georgian ჩაკეტილი სიმრავლე
nl	Dutch Gesloten verzameling
no	Norwegian Lukket mengde
pl	Polish Zbiór domknięty
pt	Portuguese Conjunto fechado
ro	Romanian Mulțime închisă
ru	Russian Замкнутое множество
sk	Slovak Uzavretá množina
sv	Swedish Sluten mängd
uk	Ukrainian Замкнута множина
vi	Vietnamese Tập đóng
zh	Chinese 闭集

Best Rank

English: #99007 10.2014

Global: #77335 10.2014

Best Rank

English: #2543 06.2002

Global: #3258 06.2002

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