Teoria espectral

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Teoria espectral

Quality:

Spectral theory - field of mathematics about eigenvalues and eigenvectors of linear operators. Article “Teoria espectral” in Catalan Wikipedia has 22.5 points for quality (as of July 1, 2025). The article contains 3 references and 1 sections.

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

Since the creation of article “Teoria espectral”, its content was written by 5 registered users of Catalan Wikipedia and edited by 171 registered Wikipedia users in all languages.

The article is cited 29 times in Catalan Wikipedia and cited 1125 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Catalan): #6025 in May 2010
  • Global: #69764 in May 2004

The highest popularity rank from 2008:

  • Local (Catalan): #51458 in July 2010
  • Global: #126514 in August 2010

There are 14 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
1Chinese (zh)
谱理论
48.2813
2English (en)
Spectral theory
42.6602
3Ukrainian (uk)
Спектральна теорія
39.2002
4French (fr)
Théorie spectrale
29.1575
5Spanish (es)
Teoría espectral
25.5121
6Persian (fa)
نظریه طیفی
23.966
7Dutch (nl)
Spectraaltheorie
23.8074
8Catalan (ca)
Teoria espectral
22.4784
9Arabic (ar)
نظرية طيفية
21.281
10Italian (it)
Teoria spettrale
19.0595
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 "Teoria espectral" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Spectral theory
711 381
2French (fr)
Théorie spectrale
68 058
3Japanese (ja)
スペクトル理論
62 480
4Spanish (es)
Teoría espectral
49 685
5Polish (pl)
Teoria spektralna
34 509
6Italian (it)
Teoria spettrale
29 145
7Russian (ru)
Спектральная теория
27 098
8Persian (fa)
نظریه طیفی
10 102
9Arabic (ar)
نظرية طيفية
8 178
10Swedish (sv)
Spektralteori
6 641
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 "Teoria espectral" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Spectral theory
3 333
2French (fr)
Théorie spectrale
295
3Japanese (ja)
スペクトル理論
237
4Chinese (zh)
谱理论
194
5Spanish (es)
Teoría espectral
164
6Italian (it)
Teoria spettrale
147
7Russian (ru)
Спектральная теория
139
8Polish (pl)
Teoria spektralna
46
9Swedish (sv)
Spektralteori
43
10Catalan (ca)
Teoria espectral
29
More...

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

The highest AI

Language versions of the article "Teoria espectral" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Spectral theory
65
2French (fr)
Théorie spectrale
24
3Italian (it)
Teoria spettrale
12
4Swedish (sv)
Spektralteori
12
5Japanese (ja)
スペクトル理論
9
6Russian (ru)
Спектральная теория
9
7Dutch (nl)
Spectraaltheorie
8
8Spanish (es)
Teoría espectral
7
9Polish (pl)
Teoria spektralna
7
10Catalan (ca)
Teoria espectral
5
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 "Teoria espectral" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Ukrainian (uk)
Спектральна теорія
1
2Arabic (ar)
نظرية طيفية
0
3Catalan (ca)
Teoria espectral
0
4English (en)
Spectral theory
0
5Spanish (es)
Teoría espectral
0
6Persian (fa)
نظریه طیفی
0
7French (fr)
Théorie spectrale
0
8Italian (it)
Teoria spettrale
0
9Japanese (ja)
スペクトル理論
0
10Dutch (nl)
Spectraaltheorie
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 "Teoria espectral" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Spectral theory
383
2Polish (pl)
Teoria spektralna
179
3Chinese (zh)
谱理论
102
4Russian (ru)
Спектральная теория
97
5Japanese (ja)
スペクトル理論
90
6Arabic (ar)
نظرية طيفية
64
7French (fr)
Théorie spectrale
56
8Spanish (es)
Teoría espectral
34
9Italian (it)
Teoria spettrale
31
10Catalan (ca)
Teoria espectral
29
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
arArabic
نظرية طيفية
caCatalan
Teoria espectral
enEnglish
Spectral theory
esSpanish
Teoría espectral
faPersian
نظریه طیفی
frFrench
Théorie spectrale
itItalian
Teoria spettrale
jaJapanese
スペクトル理論
nlDutch
Spectraaltheorie
plPolish
Teoria spektralna
ruRussian
Спектральная теория
svSwedish
Spektralteori
ukUkrainian
Спектральна теорія
zhChinese
谱理论

Popularity rank trends

Best Rank Catalan:
#51458
07.2010
Global:
#126514
08.2010

AI rank trends

Best Rank Catalan:
#6025
05.2010
Global:
#69764
05.2004

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Spectral theory from Wikipedia articles about Spectral theorem, Spectral analysis, John von Neumann, Greens function and Nicolas Bourbaki. Whereas reading the article about Spectral theory people most often go to Wikipedia articles on Spectral theorem, Spectrum, Eigenvectors and eigenvalues, Hilbert space and Hearing the shape of a drum.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 28 January 2026

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 Catalan Wikipedia the most popular articles on that day were: Glòria Serra i Ramos, Marc Crosas i Luque, Pol Guasch i Arcas, Mariano Barbacid, Borís Skóssirev, Judy Garland, Joan Molas i Casas, Albert Dalmau Miranda, Ramón Flecha García, Minneapolis.

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