Principal axis theorem

Principal axis theorem - the principal axes an ellipsoid or hyperboloid are perpendicular. Article "Principal axis theorem" in English Wikipedia has 9.3 points for quality (as of July 1, 2025). The article contains 0 references and 4 sections.

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

Since the creation of article "Principal axis theorem", its content was written by 17 registered users of English Wikipedia and edited by 102 registered Wikipedia users in all languages.

The article is cited 21 times in English Wikipedia and cited 71 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #135353 in June 2020
• Global: #72048 in February 2016

The highest popularity rank from 2008:

• Local (English): #321845 in April 2015
• Global: #233795 in July 2008

There are 7 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	German (de) Hauptachsentransformation		38.0096
2	Korean (ko) 주축정리		14.1213
3	English (en) Principal axis theorem		9.313
4	Czech (cs) Věta o hlavních osách		7.2973
5	Catalan (ca) Teorema de l'eix principal		6.7186
6	French (fr) Théorème de l'axe principal		6.4937
7	Romanian (ro) Teorema axei principale		3.1695

More...

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

The most popular language versions of the article "Principal axis theorem" in all the time

#	Language	Popularity award	Relative popularity
1	German (de) Hauptachsentransformation		401 404
2	English (en) Principal axis theorem		361 544
3	Korean (ko) 주축정리		14 716
4	French (fr) Théorème de l'axe principal		4 005
5	Romanian (ro) Teorema axei principale		1 109
6	Czech (cs) Věta o hlavních osách		126
7	Catalan (ca) Teorema de l'eix principal		81

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 "Principal axis theorem" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Principal axis theorem		1 047
2	German (de) Hauptachsentransformation		833
3	Korean (ko) 주축정리		86
4	French (fr) Théorème de l'axe principal		35
5	Romanian (ro) Teorema axei principale		15
6	Czech (cs) Věta o hlavních osách		12
7	Catalan (ca) Teorema de l'eix principal		7

More...

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

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

#	Language	AI award	Relative AI
1	German (de) Hauptachsentransformation		67
2	English (en) Principal axis theorem		17
3	French (fr) Théorème de l'axe principal		7
4	Romanian (ro) Teorema axei principale		6
5	Korean (ko) 주축정리		3
6	Catalan (ca) Teorema de l'eix principal		1
7	Czech (cs) Věta o hlavních osách		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 "Principal axis theorem" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	German (de) Hauptachsentransformation		2
2	Catalan (ca) Teorema de l'eix principal		0
3	Czech (cs) Věta o hlavních osách		0
4	English (en) Principal axis theorem		0
5	French (fr) Théorème de l'axe principal		0
6	Korean (ko) 주축정리		0
7	Romanian (ro) Teorema axei principale		0

More...

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

Language versions of the article "Principal axis theorem" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	German (de) Hauptachsentransformation		41
2	English (en) Principal axis theorem		21
3	French (fr) Théorème de l'axe principal		4
4	Czech (cs) Věta o hlavních osách		2
5	Catalan (ca) Teorema de l'eix principal		1
6	Korean (ko) 주축정리		1
7	Romanian (ro) Teorema axei principale		1

More...

#	Language	Value
ca	Catalan Teorema de l'eix principal
cs	Czech Věta o hlavních osách
de	German Hauptachsentransformation
en	English Principal axis theorem
fr	French Théorème de l'axe principal
ko	Korean 주축정리
ro	Romanian Teorema axei principale

Best Rank

English: #321845 04.2015

Global: #233795 07.2008

Best Rank

English: #135353 06.2020

Global: #72048 02.2016

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.

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