Particle number operator

en

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Particle number operator

Quality:

Particle number operator - operator in quantum mechanics whose eigenvalues label states with the number of particles in the system in those states. Article "Particle number operator" in English Wikipedia has 3.9 points for quality (as of July 1, 2025). The article contains 0 references and 2 sections.

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

Since the creation of article "Particle number operator", its content was written by 19 registered users of English Wikipedia and edited by 58 registered Wikipedia users in all languages.

The article is cited 29 times in English Wikipedia and cited 80 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #154594 in July 2009
  • Global: #163539 in January 2005

The highest popularity rank from 2008:

  • Local (English): #582256 in April 2015
  • Global: #898430 in April 2015

There are 8 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)
粒子數算符
15.5917
2Norwegian (no)
Partikkelnummeroperatøren
12.5798
3Polish (pl)
Operator liczby cząstek
11.0474
4Japanese (ja)
数演算子
8.1859
5Portuguese (pt)
Operador numérico
6.5734
6Spanish (es)
Operador de número de partículas
4.2305
7English (en)
Particle number operator
3.8873
8Ukrainian (uk)
Оператор числа частинок
3.2313
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 "Particle number operator" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Particle number operator
159 865
2Japanese (ja)
数演算子
24 231
3Polish (pl)
Operator liczby cząstek
10 550
4Spanish (es)
Operador de número de partículas
4 663
5Chinese (zh)
粒子數算符
1 894
6Ukrainian (uk)
Оператор числа частинок
1 737
7Portuguese (pt)
Operador numérico
1 442
8Norwegian (no)
Partikkelnummeroperatøren
102
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 "Particle number operator" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Particle number operator
615
2Japanese (ja)
数演算子
158
3Chinese (zh)
粒子數算符
58
4Spanish (es)
Operador de número de partículas
23
5Portuguese (pt)
Operador numérico
13
6Polish (pl)
Operator liczby cząstek
12
7Ukrainian (uk)
Оператор числа частинок
6
8Norwegian (no)
Partikkelnummeroperatøren
5
More...

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

The highest AI

Language versions of the article "Particle number operator" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Particle number operator
19
2Polish (pl)
Operator liczby cząstek
16
3Japanese (ja)
数演算子
6
4Ukrainian (uk)
Оператор числа частинок
5
5Norwegian (no)
Partikkelnummeroperatøren
4
6Portuguese (pt)
Operador numérico
3
7Chinese (zh)
粒子數算符
3
8Spanish (es)
Operador de número de partículas
2
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 "Particle number operator" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Spanish (es)
Operador de número de partículas
1
2English (en)
Particle number operator
0
3Japanese (ja)
数演算子
0
4Norwegian (no)
Partikkelnummeroperatøren
0
5Polish (pl)
Operator liczby cząstek
0
6Portuguese (pt)
Operador numérico
0
7Ukrainian (uk)
Оператор числа частинок
0
8Chinese (zh)
粒子數算符
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 "Particle number operator" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Japanese (ja)
数演算子
31
2English (en)
Particle number operator
29
3Polish (pl)
Operator liczby cząstek
7
4Chinese (zh)
粒子數算符
5
5Ukrainian (uk)
Оператор числа частинок
4
6Portuguese (pt)
Operador numérico
2
7Spanish (es)
Operador de número de partículas
1
8Norwegian (no)
Partikkelnummeroperatøren
1
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
Particle number operator
esSpanish
Operador de número de partículas
jaJapanese
数演算子
noNorwegian
Partikkelnummeroperatøren
plPolish
Operator liczby cząstek
ptPortuguese
Operador numérico
ukUkrainian
Оператор числа частинок
zhChinese
粒子數算符

Popularity rank trends

Best Rank English:
#582256
04.2015
Global:
#898430
04.2015

AI rank trends

Best Rank English:
#154594
07.2009
Global:
#163539
01.2005

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Particle number operator from Wikipedia articles about Creation and annihilation operators, Ladder operator, Fock state, Fock space and (−1)F. Whereas reading the article about Particle number operator people most often go to Wikipedia articles on Creation and annihilation operators, Quantum harmonic oscillator, Fock space, Harmonic oscillator and Second quantization.

Cumulative results of quality and popularity of the Wikipedia article

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

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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