Inverse function

Quality:

Inverse function - function that "reverses" another function: if the function f applied to an input x gives a result of y, then applying its inverse function g to y gives the result x, and vice versa. i.e., f(x) = y if and only if g(y) = x. Article "Inverse function" in English Wikipedia has 69.7 points for quality (as of July 1, 2025). The article contains 35 references and 26 sections.

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

In June 2025 the article "Inverse function" was edited by 1 authors in English Wikipedia and written by 4 authors in all languages.

Since the creation of article "Inverse function", its content was written by 261 registered users of English Wikipedia and edited by 1187 registered Wikipedia users in all languages.

The article is cited 414 times in English Wikipedia and cited 3396 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #1129 in August 2001
• Global: #1235 in August 2001

The highest popularity rank from 2008:

• Local (English): #8244 in October 2018
• Global: #9951 in October 2018

There are 48 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.

#	Language	Quality grade	Quality score
1	English (en) Inverse function		69.7201
2	Vietnamese (vi) Hàm ngược		47.2753
3	Indonesian (id) Fungsi invers		42.0119
4	Galician (gl) Función inversa		40.1217
5	Catalan (ca) Funció inversa		37.824
6	Tamil (ta) நேர்மாறுச் சார்பு		33.5037
7	German (de) Umkehrfunktion		31.6388
8	Polish (pl) Funkcja odwrotna		28.5792
9	Japanese (ja) 逆写像		26.9778
10	Italian (it) Funzione inversa		26.3066

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) Inverse function		5 200 765
2	Spanish (es) Función inversa		1 396 919
3	German (de) Umkehrfunktion		1 326 952
4	French (fr) Bijection réciproque		595 724
5	Russian (ru) Обратная функция		591 333
6	Italian (it) Funzione inversa		561 267
7	Polish (pl) Funkcja odwrotna		471 640
8	Chinese (zh) 反函數		460 325
9	Indonesian (id) Fungsi invers		321 307
10	Portuguese (pt) Função inversa		296 030

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

#	Language	Popularity award	Relative popularity
1	English (en) Inverse function		8 029
2	Spanish (es) Función inversa		1 268
3	German (de) Umkehrfunktion		1 267
4	Russian (ru) Обратная функция		1 023
5	Chinese (zh) 反函數		948
6	French (fr) Bijection réciproque		841
7	Italian (it) Funzione inversa		634
8	Korean (ko) 역함수		604
9	Japanese (ja) 逆写像		497
10	Hebrew (he) פונקציה הפיכה		328

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

#	Language	AI award	Relative AI
1	English (en) Inverse function		261
2	German (de) Umkehrfunktion		112
3	French (fr) Bijection réciproque		76
4	Spanish (es) Función inversa		52
5	Italian (it) Funzione inversa		46
6	Russian (ru) Обратная функция		46
7	Polish (pl) Funkcja odwrotna		43
8	Hebrew (he) פונקציה הפיכה		37
9	Hungarian (hu) Inverz függvény		32
10	Norwegian (no) Invers funksjon		30

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

#	Language	AI award	Relative AI
1	German (de) Umkehrfunktion		1
2	English (en) Inverse function		1
3	Swedish (sv) Invers funktion		1
4	Ukrainian (uk) Обернена функція		1
5	Arabic (ar) دالة عكسية		0
6	Azerbaijani (az) Tərs funksiya		0
7	Belarusian (be) Адваротная функцыя		0
8	Bulgarian (bg) Обратна функция		0
9	Catalan (ca) Funció inversa		0
10	Czech (cs) Inverzní zobrazení		0

The following table shows the language versions of the article with the highest number of citations.

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In English Wikipedia the most popular articles on that day were: Weapons (2025 film), Danielle Spencer (American actress), Cristiano Ronaldo, Deaths in 2025, Taylor Swift, Wednesday (TV series), Superman (2025 film), Georgina Rodríguez, Coolie (2025 film), The Fantastic Four: First Steps.

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