Trace class

Trace class operator - compact operator for which a finite trace can be defined. Article “Trace class” in English Wikipedia has 42.8 points for quality (as of July 1, 2025). The article contains 25 references and 14 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 “Trace class”, its content was written by 59 registered users of English Wikipedia and edited by 128 registered Wikipedia users in all languages.

The article is cited 494 times in English Wikipedia and cited 742 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #3287 in March 2003
• Global: #6654 in March 2003

The highest popularity rank from 2008:

• Local (English): #352522 in August 2014
• Global: #492576 in November 2014

There are 9 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) Trace class		42.8061
2	Portuguese (pt) Classe tracial		23.406
3	Polish (pl) Operator śladowy		20.4809
4	German (de) Spurklasseoperator		19.1351
5	Chinese (zh) 迹类算子		18.0542
6	Italian (it) Classe traccia		15.3504
7	Spanish (es) Operador de clase de traza		9.968
8	French (fr) Classe trace		9.0556
9	Japanese (ja) トレースクラス		8.1004

More...

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

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

#	Language	Popularity award	Relative popularity
1	English (en) Trace class		321 222
2	German (de) Spurklasseoperator		50 960
3	Spanish (es) Operador de clase de traza		18 592
4	French (fr) Classe trace		12 659
5	Japanese (ja) トレースクラス		12 407
6	Italian (it) Classe traccia		7 115
7	Chinese (zh) 迹类算子		4 292
8	Portuguese (pt) Classe tracial		3 613
9	Polish (pl) Operator śladowy		1 238

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 "Trace class" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Trace class		1 826
2	Japanese (ja) トレースクラス		125
3	German (de) Spurklasseoperator		124
4	Chinese (zh) 迹类算子		60
5	French (fr) Classe trace		55
6	Spanish (es) Operador de clase de traza		45
7	Italian (it) Classe traccia		25
8	Portuguese (pt) Classe tracial		14
9	Polish (pl) Operator śladowy		9

More...

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

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

#	Language	AI award	Relative AI
1	English (en) Trace class		59
2	German (de) Spurklasseoperator		25
3	French (fr) Classe trace		11
4	Italian (it) Classe traccia		11
5	Spanish (es) Operador de clase de traza		8
6	Japanese (ja) トレースクラス		7
7	Chinese (zh) 迹类算子		4
8	Polish (pl) Operator śladowy		2
9	Portuguese (pt) Classe tracial		1

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 "Trace class" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	German (de) Spurklasseoperator		0
2	English (en) Trace class		0
3	Spanish (es) Operador de clase de traza		0
4	French (fr) Classe trace		0
5	Italian (it) Classe traccia		0
6	Japanese (ja) トレースクラス		0
7	Polish (pl) Operator śladowy		0
8	Portuguese (pt) Classe tracial		0
9	Chinese (zh) 迹类算子		0

More...

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

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

#	Language	CI award	Relative CI
1	English (en) Trace class		494
2	Chinese (zh) 迹类算子		94
3	Japanese (ja) トレースクラス		59
4	German (de) Spurklasseoperator		45
5	Spanish (es) Operador de clase de traza		17
6	French (fr) Classe trace		14
7	Italian (it) Classe traccia		10
8	Portuguese (pt) Classe tracial		6
9	Polish (pl) Operator śladowy		3

More...

#	Language	Value
de	German Spurklasseoperator
en	English Trace class
es	Spanish Operador de clase de traza
fr	French Classe trace
it	Italian Classe traccia
ja	Japanese トレースクラス
pl	Polish Operator śladowy
pt	Portuguese Classe tracial
zh	Chinese 迹类算子

Best Rank

English: #352522 08.2014

Global: #492576 11.2014

Best Rank

English: #3287 03.2003

Global: #6654 03.2003

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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