Hilbert space

Quality:

Hilbert space - inner product space that is metrically complete; a Banach space whose norm induces an inner product (follows the parallelogram identity). Article “Hilbert space” in Simple English Wikipedia has 17.8 points for quality (as of July 1, 2025). The article contains 0 references and 2 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.94 points.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Simple English) language version.

Since the creation of article “Hilbert space”, its content was written by 17 registered users of Simple English Wikipedia and edited by 1584 registered Wikipedia users in all languages.

The article is cited 9 times in Simple English Wikipedia and cited 5745 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #1627 in October 2016
• Global: #31 in May 2003

The highest popularity rank from 2008:

• Local (Simple English): #2743 in June 2017
• Global: #18201 in October 2017

There are 44 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) Hilbert space		87.0707
2	Greek (el) Χώρος Χίλμπερτ		72.5329
3	Indonesian (id) Ruang Hilbert		61.6316
4	Japanese (ja) ヒルベルト空間		57.7461
5	Dutch (nl) Hilbertruimte		50.8316
6	Chinese (zh) 希尔伯特空间		49.6319
7	Catalan (ca) Espai de Hilbert		33.7904
8	Vietnamese (vi) Không gian Hilbert		31.5431
9	Arabic (ar) فضاء هيلبرت		28.6673
10	Hungarian (hu) Hilbert-tér		28.3127

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

#	Language	Popularity award	Relative popularity
1	English (en) Hilbert space		6 122 728
2	German (de) Hilbertraum		1 050 864
3	Russian (ru) Гильбертово пространство		875 798
4	French (fr) Espace de Hilbert		717 143
5	Spanish (es) Espacio de Hilbert		656 991
6	Japanese (ja) ヒルベルト空間		617 013
7	Italian (it) Spazio di Hilbert		562 448
8	Chinese (zh) 希尔伯特空间		436 504
9	Polish (pl) Przestrzeń Hilberta		341 154
10	Portuguese (pt) Espaço de Hilbert		132 694

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Hilbert space		30 562
2	Russian (ru) Гильбертово пространство		4 046
3	German (de) Hilbertraum		3 813
4	French (fr) Espace de Hilbert		2 879
5	Japanese (ja) ヒルベルト空間		2 726
6	Italian (it) Spazio di Hilbert		2 653
7	Spanish (es) Espacio de Hilbert		2 493
8	Chinese (zh) 希尔伯特空间		1 814
9	Polish (pl) Przestrzeń Hilberta		1 162
10	Portuguese (pt) Espaço de Hilbert		787

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

#	Language	AI award	Relative AI
1	English (en) Hilbert space		376
2	German (de) Hilbertraum		152
3	French (fr) Espace de Hilbert		103
4	Italian (it) Spazio di Hilbert		88
5	Russian (ru) Гильбертово пространство		77
6	Japanese (ja) ヒルベルト空間		68
7	Dutch (nl) Hilbertruimte		56
8	Chinese (zh) 希尔伯特空间		51
9	Hungarian (hu) Hilbert-tér		45
10	Polish (pl) Przestrzeń Hilberta		41

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

#	Language	AI award	Relative AI
1	Hungarian (hu) Hilbert-tér		2
2	German (de) Hilbertraum		1
3	Italian (it) Spazio di Hilbert		1
4	Romanian (ro) Spațiu Hilbert		1
5	Arabic (ar) فضاء هيلبرت		0
6	Azerbaijani (az) Hilbert fəzası		0
7	Bulgarian (bg) Хилбертово пространство		0
8	Catalan (ca) Espai de Hilbert		0
9	Czech (cs) Hilbertův prostor		0
10	Danish (da) Hilbertrum		0

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

On 28 January 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2025–26 UEFA Champions League, Nipah virus, Doomsday Clock, UEFA Champions League, Elena Rybakina, Donald Trump, 2026 European Men's Handball Championship, killing of Alex Pretti, Kristi Noem, deaths in 2026.

In Simple English Wikipedia the most popular articles on that day were: List of European countries, Black, Pornhub, XXXTentacion, XVideos, List of people who have walked on the Moon, Manon Bannerman, Ajit Pawar, List of U.S. states, List of sex positions.

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