Decidability theory

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Decidability theory

Quality:

Recursive set - Set where an algorithm can take a number as an input and can decide whether the number belongs to the set. Article “Decidability theory” in Simple English Wikipedia has 4 points for quality (as of July 1, 2025).

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

Since the creation of article “Decidability theory”, its content was written by 7 registered users of Simple English Wikipedia and edited by 380 registered Wikipedia users in all languages.

The article is cited 31 times in Simple English Wikipedia and cited 2089 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Simple English): #1451 in July 2024
  • Global: #25504 in May 2004

The highest popularity rank from 2008:

  • Local (Simple English): #7936 in February 2009
  • Global: #152243 in February 2008

There are 22 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
1German (de)
Entscheidbarkeit
33.2513
2English (en)
Computable set
23.9472
3French (fr)
Ensemble récursif
15.56
4Ukrainian (uk)
Обчисленна множина
14.9431
5Russian (ru)
Разрешимое множество
11.8533
6Italian (it)
Insieme ricorsivo
11.7946
7Chinese (zh)
递归集合
10.91
8Greek (el)
Αναδρομικό σύνολο
7.2463
9Persian (fa)
مجموعه بازگشتی
6.7702
10Portuguese (pt)
Conjunto recursivo
5.7482
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 "Decidability theory" in all the time
#LanguagePopularity awardRelative popularity
1German (de)
Entscheidbarkeit
520 993
2English (en)
Computable set
335 748
3Russian (ru)
Разрешимое множество
41 659
4Italian (it)
Insieme ricorsivo
35 653
5French (fr)
Ensemble récursif
32 050
6Polish (pl)
Zbiór rekurencyjny
23 680
7Japanese (ja)
帰納的集合
21 747
8Chinese (zh)
递归集合
20 147
9Spanish (es)
Conjunto recursivo
17 985
10Portuguese (pt)
Conjunto recursivo
11 798
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 "Decidability theory" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Computable set
2 220
2German (de)
Entscheidbarkeit
1 177
3Simple English (simple)
Decidability theory
414
4Russian (ru)
Разрешимое множество
146
5French (fr)
Ensemble récursif
109
6Chinese (zh)
递归集合
105
7Japanese (ja)
帰納的集合
86
8Italian (it)
Insieme ricorsivo
73
9Polish (pl)
Zbiór rekurencyjny
58
10Hebrew (he)
קבוצה רקורסיבית
27
More...

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

The highest AI

Language versions of the article "Decidability theory" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1German (de)
Entscheidbarkeit
112
2English (en)
Computable set
62
3French (fr)
Ensemble récursif
47
4Italian (it)
Insieme ricorsivo
30
5Japanese (ja)
帰納的集合
16
6Hebrew (he)
קבוצה רקורסיבית
14
7Russian (ru)
Разрешимое множество
13
8Polish (pl)
Zbiór rekurencyjny
12
9Croatian (hr)
Neodlučivost
11
10Esperanto (eo)
Komputebla aro
10
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 "Decidability theory" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Ukrainian (uk)
Обчисленна множина
3
2Arabic (ar)
مجموعة قابلة للحساب
0
3Catalan (ca)
Conjunt recursiu
0
4German (de)
Entscheidbarkeit
0
5Greek (el)
Αναδρομικό σύνολο
0
6English (en)
Computable set
0
7Esperanto (eo)
Komputebla aro
0
8Spanish (es)
Conjunto recursivo
0
9Persian (fa)
مجموعه بازگشتی
0
10French (fr)
Ensemble récursif
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 "Decidability theory" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Computable set
740
2Ukrainian (uk)
Обчисленна множина
238
3Portuguese (pt)
Conjunto recursivo
219
4German (de)
Entscheidbarkeit
217
5Chinese (zh)
递归集合
137
6French (fr)
Ensemble récursif
126
7Japanese (ja)
帰納的集合
93
8Russian (ru)
Разрешимое множество
79
9Persian (fa)
مجموعه بازگشتی
66
10Korean (ko)
재귀 집합
53
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
arArabic
مجموعة قابلة للحساب
caCatalan
Conjunt recursiu
deGerman
Entscheidbarkeit
elGreek
Αναδρομικό σύνολο
enEnglish
Computable set
eoEsperanto
Komputebla aro
esSpanish
Conjunto recursivo
faPersian
مجموعه بازگشتی
frFrench
Ensemble récursif
heHebrew
קבוצה רקורסיבית
hrCroatian
Neodlučivost
itItalian
Insieme ricorsivo
jaJapanese
帰納的集合
koKorean
재귀 집합
nlDutch
Recursieve verzameling
plPolish
Zbiór rekurencyjny
ptPortuguese
Conjunto recursivo
ruRussian
Разрешимое множество
simpleSimple English
Decidability theory
srSerbian
Рекурзиван скуп
ukUkrainian
Обчисленна множина
zhChinese
递归集合

Popularity rank trends

Best Rank Simple English:
#7936
02.2009
Global:
#152243
02.2008

AI rank trends

Best Rank Simple English:
#1451
07.2024
Global:
#25504
05.2004

Local popularity rank history

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Recursive set from Wikipedia articles about Recursively enumerable set, Alan Turing, Formal system, Recursive language and Hilberts problems. Whereas reading the article about Recursive set people most often go to Wikipedia articles on Recursively enumerable set, Halting problem, Computable function, Hilberts tenth problem and Computability.

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 Simple English Wikipedia the most popular articles on that day were: XXXTentacion, Black, List of European countries, Jeffrey Epstein, Vitruvian Man, Golden Edge, Jacqueline Kennedy Onassis, List of countries, Manon Bannerman, Megan Skiendiel.

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