Quod erat demonstrandum

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Quod erat demonstrandum

Quality:

Q.E.D. - abbreviation to indicate the completion of a mathematical proof. Article “Quod erat demonstrandum” in Danish Wikipedia has 21.4 points for quality (as of July 1, 2025). The article contains 3 references and 1 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Danish) language version.

Since the creation of article “Quod erat demonstrandum”, its content was written by 32 registered users of Danish Wikipedia and edited by 1535 registered Wikipedia users in all languages.

The article is cited 12 times in Danish Wikipedia and cited 943 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Danish): #957 in January 2008
  • Global: #640 in September 2001

The highest popularity rank from 2008:

  • Local (Danish): #5594 in December 2010
  • Global: #10025 in November 2009

There are 40 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
1English (en)
Q.E.D.
43.9682
2German (de)
Quod erat demonstrandum
30.9134
3Dutch (nl)
Quod erat demonstrandum
25.9235
4Danish (da)
Quod erat demonstrandum
21.3508
5Swedish (sv)
Quod erat demonstrandum
20.2118
6Indonesian (id)
Q.E.D.
20.0389
7Serbian (sr)
Q. E. D.
19.5137
8Simple English (simple)
Q.E.D.
18.6086
9Bulgarian (bg)
Q.E.D.
18.2563
10Hebrew (he)
מש"ל
18.1954
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 "Quod erat demonstrandum" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Q.E.D.
8 011 657
2German (de)
Quod erat demonstrandum
1 896 980
3Japanese (ja)
Q.E.D.
1 178 242
4French (fr)
CQFD (mathématiques)
610 544
5Spanish (es)
Quod erat demonstrandum
378 036
6Italian (it)
Come volevasi dimostrare
345 347
7Russian (ru)
Q.E.D.
283 329
8Dutch (nl)
Quod erat demonstrandum
244 412
9Portuguese (pt)
Quod erat demonstrandum
179 362
10Polish (pl)
Q.e.d.
165 348
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 "Quod erat demonstrandum" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Q.E.D.
15 679
2German (de)
Quod erat demonstrandum
3 672
3Indonesian (id)
Q.E.D.
2 069
4Japanese (ja)
Q.E.D.
1 965
5French (fr)
CQFD (mathématiques)
1 019
6Spanish (es)
Quod erat demonstrandum
986
7Polish (pl)
Q.e.d.
963
8Portuguese (pt)
Quod erat demonstrandum
888
9Italian (it)
Come volevasi dimostrare
850
10Korean (ko)
Q.E.D.
680
More...

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

The highest AI

Language versions of the article "Quod erat demonstrandum" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Q.E.D.
493
2German (de)
Quod erat demonstrandum
128
3French (fr)
CQFD (mathématiques)
105
4Italian (it)
Come volevasi dimostrare
87
5Russian (ru)
Q.E.D.
64
6Dutch (nl)
Quod erat demonstrandum
62
7Hungarian (hu)
Quod erat demonstrandum
39
8Japanese (ja)
Q.E.D.
37
9Norwegian (no)
Q.E.D.
35
10Polish (pl)
Q.e.d.
34
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 "Quod erat demonstrandum" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Italian (it)
Come volevasi dimostrare
2
2German (de)
Quod erat demonstrandum
1
3English (en)
Q.E.D.
1
4Russian (ru)
Q.E.D.
1
5Chinese (zh)
證明完畢
1
6Arabic (ar)
وهو المطلوب إثباته
0
7Bulgarian (bg)
Q.E.D.
0
8Catalan (ca)
Quod erat demonstrandum
0
9Czech (cs)
Q.E.D.
0
10Danish (da)
Quod erat demonstrandum
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 "Quod erat demonstrandum" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Q.E.D.
146
2Russian (ru)
Q.E.D.
93
3Hungarian (hu)
Quod erat demonstrandum
67
4Italian (it)
Come volevasi dimostrare
58
5German (de)
Quod erat demonstrandum
53
6Spanish (es)
Quod erat demonstrandum
47
7Japanese (ja)
Q.E.D.
38
8Catalan (ca)
Quod erat demonstrandum
33
9French (fr)
CQFD (mathématiques)
33
10Portuguese (pt)
Quod erat demonstrandum
32
More...

Scores

Estimated value for Wikipedia:
Danish:
Global:
Popularity in June 2025:
Danish:
Global:
Popularity in all years:
Danish:
Global:
Authors in June 2025:
Danish:
Global:
Registered authors in all years:
Danish:
Global:
Citations:
Danish:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
وهو المطلوب إثباته
bgBulgarian
Q.E.D.
caCatalan
Quod erat demonstrandum
csCzech
Q.E.D.
daDanish
Quod erat demonstrandum
deGerman
Quod erat demonstrandum
elGreek
Όπερ έδει δείξαι
enEnglish
Q.E.D.
eoEsperanto
K.E.P.
esSpanish
Quod erat demonstrandum
etEstonian
Quod erat demonstrandum
euBasque
Quod erat demonstrandum
faPersian
کیوئی‌دی
fiFinnish
M.O.T.
frFrench
CQFD (mathématiques)
glGalician
Quod erat demonstrandum
heHebrew
מש"ל
huHungarian
Quod erat demonstrandum
hyArmenian
Q.E.D.
idIndonesian
Q.E.D.
itItalian
Come volevasi dimostrare
jaJapanese
Q.E.D.
koKorean
Q.E.D.
laLatin
QED
nlDutch
Quod erat demonstrandum
nnNorwegian (Nynorsk)
Q.E.D.
noNorwegian
Q.E.D.
plPolish
Q.e.d.
ptPortuguese
Quod erat demonstrandum
roRomanian
Quod erat demonstrandum
ruRussian
Q.E.D.
simpleSimple English
Q.E.D.
skSlovak
Q.E.D.
slSlovenian
Q.E.D.
srSerbian
Q. E. D.
svSwedish
Quod erat demonstrandum
thThai
ซ.ต.พ.
trTurkish
Quod erat demonstrandum
ukUkrainian
Q.E.D.
zhChinese
證明完畢

Popularity rank trends

Best Rank Danish:
#5594
12.2010
Global:
#10025
11.2009

AI rank trends

Best Rank Danish:
#957
01.2008
Global:
#640
09.2001

Local popularity rank history

Local AI rank history

Global AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Q.E.D. from Wikipedia articles about QED, The Book of Mormon, Tombstone, Therefore sign and Mathematical proof. Whereas reading the article about Q.E.D. people most often go to Wikipedia articles on Tombstone, QED, Mathematical proof, Proof by contradiction and Bobs your uncle.

Cumulative results of quality and popularity of the Wikipedia article

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

en: Q.E.D.
ja: Q.E.D.
ru: Q.E.D.
pl: Q.e.d.
ko: Q.E.D.
fi: M.O.T.
cs: Q.E.D.
no: Q.E.D.
id: Q.E.D.
sl: Q.E.D.
sk: Q.E.D.
uk: Q.E.D.
simple: Q.E.D.
la: QED
eo: K.E.P.
nn: Q.E.D.
bg: Q.E.D.
hy: Q.E.D.

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In Danish Wikipedia the most popular articles on that day were: Madeleine Dupont, Denise Dupont, Keld Heick, Dansk Melodi Grand Prix 2026, Søren Torpegaard Lund, Oliver Dupont, Alex Høgh Andersen, Anne de Besche, Jeffrey Epstein, Mathilde Halse.

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