Sign function

Quality:

Sign function - mathematical function that extracts the sign of a real number or complex number. Article "Sign function" in English Wikipedia has 36.9 points for quality (as of July 1, 2025). The article contains 7 references and 15 sections.

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

In June 2025 the article "Sign function" was edited by 3 authors in English Wikipedia and written by 7 authors in all languages.

Since the creation of article "Sign function", its content was written by 127 registered users of English Wikipedia and edited by 684 registered Wikipedia users in all languages.

The article is cited 118 times in English Wikipedia and cited 883 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #4561 in March 2004
  • Global: #10762 in May 2010

The highest popularity rank from 2008:

  • Local (English): #7651 in October 2017
  • Global: #14833 in October 2017

There are 38 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
1Estonian (et)
Signumfunktsioon
41.7543
2English (en)
Sign function
36.9277
3Finnish (fi)
Signum-funktio
36.5791
4Catalan (ca)
Funció signe
34.7611
5German (de)
Vorzeichenfunktion
21.5133
6Galician (gl)
Función signo
16.6994
7Persian (fa)
تابع علامت
16.1951
8Greek (el)
Συνάρτηση προσήμου
15.3986
9Polish (pl)
Funkcja signum
14.9244
10Thai (th)
ฟังก์ชันเครื่องหมาย
14.3268
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 "Sign function" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Sign function
2 646 139
2German (de)
Vorzeichenfunktion
513 900
3Spanish (es)
Función signo
481 972
4Russian (ru)
Sgn
451 555
5Polish (pl)
Funkcja signum
383 805
6Japanese (ja)
符号関数
237 517
7Chinese (zh)
符号函数
221 051
8Italian (it)
Funzione segno
148 496
9Persian (fa)
تابع علامت
145 886
10French (fr)
Fonction signe
111 558
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 "Sign function" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Sign function
6 600
2German (de)
Vorzeichenfunktion
932
3Chinese (zh)
符号函数
794
4Russian (ru)
Sgn
738
5Japanese (ja)
符号関数
669
6Polish (pl)
Funkcja signum
515
7Spanish (es)
Función signo
486
8French (fr)
Fonction signe
260
9Italian (it)
Funzione segno
237
10Czech (cs)
Funkce signum
125
More...

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

The highest AI

Language versions of the article "Sign function" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Sign function
127
2German (de)
Vorzeichenfunktion
86
3Russian (ru)
Sgn
42
4Italian (it)
Funzione segno
36
5Dutch (nl)
Signum (wiskunde)
34
6Hungarian (hu)
Szignumfüggvény
33
7Spanish (es)
Función signo
30
8French (fr)
Fonction signe
24
9Polish (pl)
Funkcja signum
22
10Czech (cs)
Funkce signum
19
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 "Sign function" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Sign function
3
2Arabic (ar)
دالة الإشارة
1
3Romanian (ro)
Funcția semn
1
4Swedish (sv)
Signumfunktionen
1
5Ukrainian (uk)
Signum-функція
1
6Bulgarian (bg)
Сигнум
0
7Catalan (ca)
Funció signe
0
8Czech (cs)
Funkce signum
0
9German (de)
Vorzeichenfunktion
0
10Greek (el)
Συνάρτηση προσήμου
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 "Sign function" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Sign function
118
2Portuguese (pt)
Função sinal
76
3German (de)
Vorzeichenfunktion
59
4Russian (ru)
Sgn
52
5Persian (fa)
تابع علامت
51
6Hebrew (he)
פונקציית הסימן
45
7Spanish (es)
Función signo
40
8Indonesian (id)
Fungsi tanda
39
9Japanese (ja)
符号関数
39
10Chinese (zh)
符号函数
33
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
دالة الإشارة
bgBulgarian
Сигнум
caCatalan
Funció signe
csCzech
Funkce signum
deGerman
Vorzeichenfunktion
elGreek
Συνάρτηση προσήμου
enEnglish
Sign function
eoEsperanto
Signuma funkcio
esSpanish
Función signo
etEstonian
Signumfunktsioon
faPersian
تابع علامت
fiFinnish
Signum-funktio
frFrench
Fonction signe
glGalician
Función signo
heHebrew
פונקציית הסימן
hiHindi
चिह्न फलन
huHungarian
Szignumfüggvény
hyArmenian
Sgn
idIndonesian
Fungsi tanda
itItalian
Funzione segno
jaJapanese
符号関数
koKorean
부호함수
laLatin
Signum (functio)
nlDutch
Signum (wiskunde)
noNorwegian
Signum (matematikk)
plPolish
Funkcja signum
ptPortuguese
Função sinal
roRomanian
Funcția semn
ruRussian
Sgn
skSlovak
Signum (matematika)
srSerbian
Сигнум функција
svSwedish
Signumfunktionen
taTamil
குறிச் சார்பு
thThai
ฟังก์ชันเครื่องหมาย
trTurkish
İşaret fonksiyonu
ukUkrainian
Signum-функція
viVietnamese
Signum
zhChinese
符号函数

Popularity rank trends

Best Rank English:
#7651
10.2017
Global:
#14833
10.2017

AI rank trends

Best Rank English:
#4561
03.2004
Global:
#10762
05.2010

Local popularity rank history

Local AI rank history

Languages comparison

Important global interconnections

Wikipedia readers most often find their way to information on Sign function from Wikipedia articles about Heaviside step function, Signum, Hilbert transform, Absolute value and Square wave. Whereas reading the article about Sign function people most often go to Wikipedia articles on Heaviside step function, Dirac delta function, Trichotomy law, Piecewise function and Iverson bracket.

Cumulative results of quality and popularity of the Wikipedia article

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

ru: Sgn
vi: Signum
hy: Sgn

News from 8 July 2025

On 8 July 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Diogo Jota, João Pedro, Ozzy Osbourne, Laura Siegemund, Aryna Sabalenka, Julian McMahon, Jurassic World Rebirth, 2025 FIFA Club World Cup, Amanda Anisimova, F1.

In English Wikipedia the most popular articles on that day were: Superman (2025 film), João Pedro (footballer, born 2001), Untitled Jurassic World film, Aryna Sabalenka, Laura Siegemund, Ozzy Osbourne, Amanda Anisimova, Jeffrey Epstein, Cameron Norrie, Deaths in 2025.

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