Teoria espectral

pt

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Teoria espectral

Quality:

Spectral theory - field of mathematics about eigenvalues and eigenvectors of linear operators. Article “Teoria espectral” in Portuguese Wikipedia has 36.4 points for quality (as of July 1, 2026). The article contains 30 references and 12 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 2 registered users of Portuguese Wikipedia and edited by 179 registered Wikipedia users in all languages.

The article is cited 19 times in Portuguese Wikipedia and cited 1192 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Portuguese): #43791 in April 2026
  • Global: #69856 in May 2004

The highest popularity rank from 2008:

  • Local (Portuguese): #323599 in March 2026
  • Global: #127116 in August 2010

There are 15 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.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Chinese (zh)
谱理论
48.1919
2English (en)
Spectral theory
42.4837
3Ukrainian (uk)
Спектральна теорія
36.9262
4Portuguese (pt)
Teoria espectral
36.4054
5French (fr)
Théorie spectrale
29.0852
6Spanish (es)
Teoría espectral
25.0743
7Persian (fa)
نظریه طیفی
23.9608
8Dutch (nl)
Spectraaltheorie
23.795
9Catalan (ca)
Teoria espectral
22.4795
10Arabic (ar)
نظرية طيفية
21.2749
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
751 525
2French (fr)
Théorie spectrale
72 081
3Japanese (ja)
スペクトル理論
65 316
4Spanish (es)
Teoría espectral
51 639
5Polish (pl)
Teoria spektralna
35 071
6Italian (it)
Teoria spettrale
30 648
7Russian (ru)
Спектральная теория
29 089
8Persian (fa)
نظریه طیفی
10 426
9Arabic (ar)
نظرية طيفية
8 386
10Swedish (sv)
Spektralteori
6 871
More...

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

Most popular in June 2026

The most popular language versions of the article "Teoria espectral" in June 2026
#LanguagePopularity awardRelative popularity
1English (en)
Spectral theory
2 663
2French (fr)
Théorie spectrale
230
3Japanese (ja)
スペクトル理論
207
4Chinese (zh)
谱理论
186
5Spanish (es)
Teoría espectral
124
6Italian (it)
Teoria spettrale
109
7Russian (ru)
Спектральная теория
109
8Polish (pl)
Teoria spektralna
53
9Persian (fa)
نظریه طیفی
31
10Swedish (sv)
Spektralteori
20
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
67
2French (fr)
Théorie spectrale
25
3Italian (it)
Teoria spettrale
13
4Swedish (sv)
Spektralteori
12
5Japanese (ja)
スペクトル理論
9
6Russian (ru)
Спектральная теория
9
7Spanish (es)
Teoría espectral
8
8Dutch (nl)
Spectraaltheorie
8
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 2026

Language versions of the article "Teoria espectral" with the highest AI in June 2026
#LanguageAI awardRelative AI
1Chinese (zh)
谱理论
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
414
2Polish (pl)
Teoria spektralna
182
3Chinese (zh)
谱理论
106
4Russian (ru)
Спектральная теория
99
5Japanese (ja)
スペクトル理論
97
6Arabic (ar)
نظرية طيفية
63
7French (fr)
Théorie spectrale
57
8Spanish (es)
Teoría espectral
37
9Italian (it)
Teoria spettrale
32
10Catalan (ca)
Teoria espectral
29
More...

Scores

Estimated value for Wikipedia:
Portuguese:
Global:
Popularity in June 2026:
Portuguese:
Global:
Popularity in all years:
Portuguese:
Global:
Authors in June 2026:
Portuguese:
Global:
Registered authors in all years:
Portuguese:
Global:
Citations:
Portuguese:
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
ptPortuguese
Teoria espectral
ruRussian
Спектральная теория
svSwedish
Spektralteori
ukUkrainian
Спектральна теорія
zhChinese
谱理论

Popularity rank trends

Best Rank Portuguese:
#323599
03.2026
Global:
#127116
08.2010

AI rank trends

Best Rank Portuguese:
#43791
04.2026
Global:
#69856
05.2004

Languages comparison

Important global interconnections (July 2025 – June 2026)

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 1 July 2026

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 Portuguese Wikipedia the most popular articles on that day were: Erling Haaland, República Democrática do Congo, Romelu Lukaku, Copa do Mundo FIFA de 2026, Kylian Mbappé, Senegal, Copa do Mundo FIFA, Lista de artilheiros da Copa do Mundo FIFA, Harry Kane, Carlo Ancelotti.

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 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