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 69.5 points for quality (as of July 1, 2026). 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 (English) language version.

In June 2026 the article “Inverse function” was edited by 2 authors in English Wikipedia and written by 5 authors in all languages.

Since the creation of article “Inverse function”, its content was written by 268 registered users of English Wikipedia and edited by 1192 registered Wikipedia users in all languages.

The article is cited 405 times in English Wikipedia and cited 3520 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #1206 in August 2001
• Global: #1311 in August 2001

The highest popularity rank from 2008:

• Local (English): #8296 in October 2018
• Global: #9977 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, 2026 (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		69.4867
2	Ukrainian (uk) Обернена функція		57.2719
3	Vietnamese (vi) Hàm ngược		47.1393
4	Indonesian (id) Fungsi invers		40.7542
5	Galician (gl) Función inversa		40.1611
6	Chinese (zh) 反函數		38.7761
7	Catalan (ca) Funció inversa		37.8383
8	Tamil (ta) நேர்மாறுச் சார்பு		33.078
9	German (de) Umkehrfunktion		31.2934
10	Azerbaijani (az) Tərs funksiya		30.5184

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

#	Language	Popularity award	Relative popularity
1	English (en) Inverse function		5 291 947
2	Spanish (es) Función inversa		1 408 107
3	German (de) Umkehrfunktion		1 345 514
4	Russian (ru) Обратная функция		671 412
5	French (fr) Bijection réciproque		608 856
6	Italian (it) Funzione inversa		566 679
7	Polish (pl) Funkcja odwrotna		477 066
8	Chinese (zh) 反函數		471 642
9	Indonesian (id) Fungsi invers		325 399
10	Portuguese (pt) Função inversa		298 397

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		4 692
2	German (de) Umkehrfunktion		845
3	French (fr) Bijection réciproque		636
4	Russian (ru) Обратная функция		588
5	Spanish (es) Función inversa		460
6	Chinese (zh) 反函數		454
7	Italian (it) Funzione inversa		311
8	Japanese (ja) 逆写像		271
9	Polish (pl) Funkcja odwrotna		217
10	Hebrew (he) פונקציה הפיכה		181

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		268
2	German (de) Umkehrfunktion		118
3	French (fr) Bijection réciproque		79
4	Spanish (es) Función inversa		53
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		33
10	Chinese (zh) 反函數		31

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	English (en) Inverse function		2
2	Arabic (ar) دالة عكسية		1
3	Danish (da) Invers funktion		1
4	Uzbek (uz) Teskari funksiya		1
5	Azerbaijani (az) Tərs funksiya		0
6	Belarusian (be) Адваротная функцыя		0
7	Bulgarian (bg) Обратна функция		0
8	Catalan (ca) Funció inversa		0
9	Czech (cs) Inverzní zobrazení		0
10	German (de) Umkehrfunktion		0

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

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 English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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