Undefined (mathematics)

en

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Undefined (mathematics)

Quality:

Undefined - mathematical concept which does not have meaning and so which is not assigned an interpretation. Article “Undefined (mathematics)” in English Wikipedia has 37.5 points for quality (as of July 1, 2025). The article contains 17 references and 13 sections.

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

Since the creation of article “Undefined (mathematics)”, its content was written by 95 registered users of English Wikipedia and edited by 108 registered Wikipedia users in all languages.

The article is cited 33 times in English Wikipedia and cited 73 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #29481 in May 2003
  • Global: #38370 in May 2003

The highest popularity rank from 2008:

  • Local (English): #1299 in January 2012
  • Global: #4668 in January 2012

There are 6 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)
Undefined (mathematics)
37.4853
2Turkish (tr)
Tanımsız (matematik)
17.1391
3Romanian (ro)
Expresie nedefinită
17.0878
4Arabic (ar)
غير معرف (رياضيات)
11.8269
5Hebrew (he)
לא מוגדר
7.414
6Chinese (zh)
未定義 (數學)
1.9762
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 "Undefined (mathematics)" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Undefined (mathematics)
1 951 454
2Arabic (ar)
غير معرف (رياضيات)
16 424
3Chinese (zh)
未定義 (數學)
8 531
4Hebrew (he)
לא מוגדר
2 169
5Romanian (ro)
Expresie nedefinită
1 673
6Turkish (tr)
Tanımsız (matematik)
186
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 "Undefined (mathematics)" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Undefined (mathematics)
4 096
2Chinese (zh)
未定義 (數學)
77
3Arabic (ar)
غير معرف (رياضيات)
32
4Turkish (tr)
Tanımsız (matematik)
25
5Romanian (ro)
Expresie nedefinită
23
6Hebrew (he)
לא מוגדר
16
More...

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

The highest AI

Language versions of the article "Undefined (mathematics)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Undefined (mathematics)
95
2Arabic (ar)
غير معرف (رياضيات)
4
3Chinese (zh)
未定義 (數學)
4
4Hebrew (he)
לא מוגדר
3
5Romanian (ro)
Expresie nedefinită
1
6Turkish (tr)
Tanımsız (matematik)
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 "Undefined (mathematics)" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Chinese (zh)
未定義 (數學)
1
2Arabic (ar)
غير معرف (رياضيات)
0
3English (en)
Undefined (mathematics)
0
4Hebrew (he)
לא מוגדר
0
5Romanian (ro)
Expresie nedefinită
0
6Turkish (tr)
Tanımsız (matematik)
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 "Undefined (mathematics)" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Undefined (mathematics)
33
2Romanian (ro)
Expresie nedefinită
20
3Hebrew (he)
לא מוגדר
8
4Chinese (zh)
未定義 (數學)
7
5Turkish (tr)
Tanımsız (matematik)
3
6Arabic (ar)
غير معرف (رياضيات)
2
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
arArabic
غير معرف (رياضيات)
enEnglish
Undefined (mathematics)
heHebrew
לא מוגדר
roRomanian
Expresie nedefinită
trTurkish
Tanımsız (matematik)
zhChinese
未定義 (數學)

Popularity rank trends

Best Rank English:
#1299
01.2012
Global:
#4668
01.2012

AI rank trends

Best Rank English:
#29481
05.2003
Global:
#38370
05.2003

Local popularity rank history

Global popularity rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Undefined from Wikipedia articles about Division by zero, Undefined, Zero to the power of zero, Indeterminate form and Well-defined. Whereas reading the article about Undefined people most often go to Wikipedia articles on Indeterminate form, Division by zero, Primitive notion, Zero to the power of zero and Imaginary number.

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 February 2026

On 28 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Ali Khamenei, Iran, Ruhollah Khomeini, Jeffrey Epstein, Supreme Leader of Iran, Mohammad Reza I of Iran, 2026 Israeli–United States strikes on Iran, Neil Sedaka, Masoud Pezeshkian, Resident Evil Requiem.

In English Wikipedia the most popular articles on that day were: Ali Khamenei, 2026 Israeli–United States strikes on Iran, Neil Sedaka, Iran, Ruhollah Khomeini, Iran–Israel conflict, Supreme Leader of Iran, Scream 7, Elimination Chamber (2026), World War III.

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