Projection (linear algebra)

Projection - linear transformation that, when applied multiple times to any value, gives the same result as if it were applied once. Article "Projection (linear algebra)" in English Wikipedia has 48.4 points for quality (as of July 1, 2025). The article contains 15 references and 22 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that language version.

Since the creation of article "Projection (linear algebra)", its content was written by 182 registered users of English Wikipedia and edited by 517 registered Wikipedia users in all languages.

The article is cited 644 times in English Wikipedia and cited 2022 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #2727 in February 2004
• Global: #8644 in February 2005

The highest popularity rank from 2008:

• Local (English): #44819 in November 2014
• Global: #54762 in November 2014

There are 21 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) Projection (linear algebra)		48.3556
2	Greek (el) Προβολή (γραμμική άλγεβρα)		46.1657
3	Spanish (es) Operador de proyección		40.5877
4	Chinese (zh) 投影 (线性代数)		35.3353
5	Portuguese (pt) Projeção (álgebra linear)		35.0591
6	Polish (pl) Rzut (algebra liniowa)		24.986
7	Vietnamese (vi) Phép chiếu (đại số tuyến tính)		24.1937
8	French (fr) Projecteur (mathématiques)		19.6177
9	Japanese (ja) 射影作用素		19.2868
10	Czech (cs) Projekce (lineární algebra)		18.9478

More...

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

The most popular language versions of the article "Projection (linear algebra)" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Projection (linear algebra)		3 238 099
2	Italian (it) Proiezione (geometria)		448 506
3	French (fr) Projecteur (mathématiques)		424 212
4	German (de) Projektion (Lineare Algebra)		234 452
5	Chinese (zh) 投影 (线性代数)		169 983
6	Russian (ru) Проектор (математика)		117 626
7	Japanese (ja) 射影作用素		117 208
8	Polish (pl) Rzut (algebra liniowa)		110 308
9	Hebrew (he) הטלה (מתמטיקה)		99 811
10	Spanish (es) Operador de proyección		83 407

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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 "Projection (linear algebra)" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Projection (linear algebra)		8 703
2	Chinese (zh) 投影 (线性代数)		836
3	German (de) Projektion (Lineare Algebra)		712
4	Russian (ru) Проектор (математика)		606
5	Hebrew (he) הטלה (מתמטיקה)		516
6	Polish (pl) Rzut (algebra liniowa)		441
7	Japanese (ja) 射影作用素		440
8	French (fr) Projecteur (mathématiques)		343
9	Italian (it) Proiezione (geometria)		317
10	Spanish (es) Operador de proyección		268

More...

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

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

#	Language	AI award	Relative AI
1	English (en) Projection (linear algebra)		182
2	Italian (it) Proiezione (geometria)		61
3	French (fr) Projecteur (mathématiques)		60
4	German (de) Projektion (Lineare Algebra)		39
5	Russian (ru) Проектор (математика)		31
6	Hebrew (he) הטלה (מתמטיקה)		25
7	Polish (pl) Rzut (algebra liniowa)		22
8	Spanish (es) Operador de proyección		19
9	Chinese (zh) 投影 (线性代数)		18
10	Japanese (ja) 射影作用素		14

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

Language versions of the article "Projection (linear algebra)" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Hebrew (he) הטלה (מתמטיקה)		1
2	Arabic (ar) إسقاط (هندسة)		0
3	Catalan (ca) Operador de projecció		0
4	Czech (cs) Projekce (lineární algebra)		0
5	German (de) Projektion (Lineare Algebra)		0
6	Greek (el) Προβολή (γραμμική άλγεβρα)		0
7	English (en) Projection (linear algebra)		0
8	Spanish (es) Operador de proyección		0
9	Finnish (fi) Projektio (lineaarialgebra)		0
10	French (fr) Projecteur (mathématiques)		0

More...

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

Language versions of the article "Projection (linear algebra)" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Projection (linear algebra)		644
2	Japanese (ja) 射影作用素		184
3	French (fr) Projecteur (mathématiques)		148
4	Slovenian (sl) Projekcija (linearna algebra)		140
5	Greek (el) Προβολή (γραμμική άλγεβρα)		133
6	Italian (it) Proiezione (geometria)		106
7	Ukrainian (uk) Проєкційна матриця		103
8	German (de) Projektion (Lineare Algebra)		88
9	Korean (ko) 사영작용소		65
10	Polish (pl) Rzut (algebra liniowa)		65

More...

#	Language	Value
ar	Arabic إسقاط (هندسة)
ca	Catalan Operador de projecció
cs	Czech Projekce (lineární algebra)
de	German Projektion (Lineare Algebra)
el	Greek Προβολή (γραμμική άλγεβρα)
en	English Projection (linear algebra)
es	Spanish Operador de proyección
fi	Finnish Projektio (lineaarialgebra)
fr	French Projecteur (mathématiques)
he	Hebrew הטלה (מתמטיקה)
it	Italian Proiezione (geometria)
ja	Japanese 射影作用素
ko	Korean 사영작용소
pl	Polish Rzut (algebra liniowa)
pt	Portuguese Projeção (álgebra linear)
ru	Russian Проектор (математика)
sk	Slovak Projekčná matica (matematika)
sl	Slovenian Projekcija (linearna algebra)
uk	Ukrainian Проєкційна матриця
vi	Vietnamese Phép chiếu (đại số tuyến tính)
zh	Chinese 投影 (线性代数)

Best Rank

English: #44819 11.2014

Global: #54762 11.2014

Best Rank

English: #2727 02.2004

Global: #8644 02.2005

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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