Spectral theory of compact operators

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Spectral theory of compact operators

Quality:

Article “Spectral theory of compact operators” in English Wikipedia has 15.9 points for quality (as of July 1, 2025). The article contains 0 references and 8 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.83 points.

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

In June 2025 the article “Spectral theory of compact operators” was edited by 2 authors in English Wikipedia and written by 2 authors in all languages.

Since the creation of article “Spectral theory of compact operators”, its content was written by 13 registered users of English Wikipedia and edited by 14 registered Wikipedia users in all languages.

The article is cited 67 times in English Wikipedia and cited 72 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #205581 in June 2025
  • Global: #594586 in June 2025

The highest popularity rank from 2008:

  • Local (English): #665538 in April 2011
  • Global: #1124760 in April 2011

There are 2 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.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Spectral theory of compact operators
15.8529
2Japanese (ja)
コンパクト作用素のスペクトル理論
7.0755
More...

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

Most popular in all the time

The most popular language versions of the article "Spectral theory of compact operators" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Spectral theory of compact operators
119 297
2Japanese (ja)
コンパクト作用素のスペクトル理論
4 465
More...

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

Most popular in June 2025

The most popular language versions of the article "Spectral theory of compact operators" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Spectral theory of compact operators
723
2Japanese (ja)
コンパクト作用素のスペクトル理論
55
More...

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

The highest AI

Language versions of the article "Spectral theory of compact operators" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Spectral theory of compact operators
13
2Japanese (ja)
コンパクト作用素のスペクトル理論
1
More...

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

The highest AI in June 2025

Language versions of the article "Spectral theory of compact operators" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Spectral theory of compact operators
2
2Japanese (ja)
コンパクト作用素のスペクトル理論
0
More...

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

The highest CI

Language versions of the article "Spectral theory of compact operators" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Spectral theory of compact operators
67
2Japanese (ja)
コンパクト作用素のスペクトル理論
5
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
enEnglish
Spectral theory of compact operators
jaJapanese
コンパクト作用素のスペクトル理論

Popularity rank trends

Best Rank English:
#665538
04.2011
Global:
#1124760
04.2011

AI rank trends

Best Rank English:
#205581
06.2025
Global:
#594586
06.2025

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Spectral theory of compact operators from Wikipedia articles about Spectral theorem, Fredholm alternative, Compact operator, Compact operator on Hilbert space and Mercers theorem. Whereas reading the article about Spectral theory of compact operators people most often go to Wikipedia articles on Spectral theorem, Spectrum, Compact operator, Holomorphic functional calculus and Spectral theory of normal C*-algebras.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In English Wikipedia the most popular articles on that day were: Jeffrey Epstein, Wuthering Heights, Wuthering Heights (2026 film), 2026 Winter Olympics, Lucas Pinheiro Braathen, Ice hockey at the 2026 Winter Olympics – Men's tournament, Epstein files, John F. Kennedy Jr., Anthony Kim, James Van Der Beek.

About WikiRank

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