Subdifferential

Subderivative - generalize the derivative to functions which are not differentiable. Article “Subdifferential” in German Wikipedia has 26 points for quality (as of July 1, 2025). The article contains 4 references and 7 sections.

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

Since the creation of article “Subdifferential”, its content was written by 24 registered users of German Wikipedia and edited by 195 registered Wikipedia users in all languages.

The article is cited 7 times in German Wikipedia and cited 220 times in all languages.

The highest Authors Interest rank from 2001:

• Local (German): #12530 in December 2013
• Global: #88315 in July 2011

The highest popularity rank from 2008:

• Local (German): #218806 in May 2010
• Global: #290205 in January 2015

There are 12 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	French (fr) Sous-différentiel		27.5635
2	German (de) Subdifferential		26.001
3	English (en) Subderivative		22.2924
4	Korean (ko) 하방미분		14.7665
5	Chinese (zh) 次导数		14.7062
6	Russian (ru) Субдифференциал		12.6584
7	Polish (pl) Subróżniczka		11.7837
8	Japanese (ja) 劣微分		11.7297
9	Ukrainian (uk) Субдиференціал		6.1589
10	Swedish (sv) Subgradient		5.3744

More...

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

The most popular language versions of the article "Subdifferential" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Subderivative		516 623
2	French (fr) Sous-différentiel		61 645
3	German (de) Subdifferential		61 220
4	Chinese (zh) 次导数		41 223
5	Japanese (ja) 劣微分		33 266
6	Russian (ru) Субдифференциал		32 173
7	Polish (pl) Subróżniczka		19 250
8	Italian (it) Subdifferenziale		16 431
9	Swedish (sv) Subgradient		11 014
10	Portuguese (pt) Subderivada		4 753

More...

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

The most popular language versions of the article "Subdifferential" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Subderivative		2 527
2	German (de) Subdifferential		283
3	Japanese (ja) 劣微分		232
4	French (fr) Sous-différentiel		207
5	Russian (ru) Субдифференциал		159
6	Chinese (zh) 次导数		140
7	Italian (it) Subdifferenziale		61
8	Polish (pl) Subróżniczka		40
9	Korean (ko) 하방미분		36
10	Portuguese (pt) Subderivada		19

More...

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

Language versions of the article "Subdifferential" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Subderivative		55
2	French (fr) Sous-différentiel		38
3	German (de) Subdifferential		24
4	Italian (it) Subdifferenziale		20
5	Russian (ru) Субдифференциал		20
6	Japanese (ja) 劣微分		8
7	Swedish (sv) Subgradient		7
8	Chinese (zh) 次导数		7
9	Ukrainian (uk) Субдиференціал		6
10	Polish (pl) Subróżniczka		5

More...

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

Language versions of the article "Subdifferential" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	English (en) Subderivative		1
2	Italian (it) Subdifferenziale		1
3	German (de) Subdifferential		0
4	French (fr) Sous-différentiel		0
5	Japanese (ja) 劣微分		0
6	Korean (ko) 하방미분		0
7	Polish (pl) Subróżniczka		0
8	Portuguese (pt) Subderivada		0
9	Russian (ru) Субдифференциал		0
10	Swedish (sv) Subgradient		0

More...

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

Language versions of the article "Subdifferential" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Subderivative		110
2	French (fr) Sous-différentiel		29
3	Chinese (zh) 次导数		16
4	Russian (ru) Субдифференциал		14
5	Ukrainian (uk) Субдиференціал		12
6	Japanese (ja) 劣微分		10
7	German (de) Subdifferential		7
8	Polish (pl) Subróżniczka		7
9	Portuguese (pt) Subderivada		6
10	Korean (ko) 하방미분		5

More...

#	Language	Value
de	German Subdifferential
en	English Subderivative
fr	French Sous-différentiel
it	Italian Subdifferenziale
ja	Japanese 劣微分
ko	Korean 하방미분
pl	Polish Subróżniczka
pt	Portuguese Subderivada
ru	Russian Субдифференциал
sv	Swedish Subgradient
uk	Ukrainian Субдиференціал
zh	Chinese 次导数

Best Rank

German: #218806 05.2010

Global: #290205 01.2015

Best Rank

German: #12530 12.2013

Global: #88315 07.2011

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In German Wikipedia the most popular articles on that day were: Oscarverleihung 2026, One Battle After Another, Blood & Sinners, Michael B. Jordan, Jessie Buckley, Jürgen Habermas, Sean Penn, Banksy, Liste der größten Auslegerbrücken, Amy Madigan.

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