Contraposição

Contraposition - inference that says that a conditional statement is logically equivalent to its contrapositive. Article “Contraposição” in Portuguese Wikipedia has 18.2 points for quality (as of July 1, 2025). The article contains 1 references and 10 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.96 points.

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

Since the creation of article “Contraposição”, its content was written by 9 registered users of Portuguese Wikipedia and edited by 519 registered Wikipedia users in all languages.

The article is cited 18 times in Portuguese Wikipedia and cited 645 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Portuguese): #26770 in April 2013
• Global: #332 in January 2002

The highest popularity rank from 2008:

• Local (Portuguese): #32372 in August 2016
• Global: #50771 in October 2020

There are 22 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) Contraposition		45.9889
2	Polish (pl) Prawo kontrapozycji		39.5863
3	Hebrew (he) קונטרה פוזיטיב		32.9128
4	Spanish (es) Contraposición lógica		24.5237
5	Russian (ru) Закон контрапозиции		19.5468
6	Portuguese (pt) Contraposição		18.1645
7	Arabic (ar) عكس نقيض		17.3511
8	Galician (gl) Contraposición		15.6719
9	Ukrainian (uk) Контрапозиція		12.559
10	French (fr) Proposition contraposée		11.4567

More...

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

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

#	Language	Popularity award	Relative popularity
1	English (en) Contraposition		2 177 343
2	Japanese (ja) 対偶 (論理学)		458 874
3	French (fr) Proposition contraposée		451 235
4	Spanish (es) Contraposición lógica		330 950
5	German (de) Kontraposition		194 426
6	Portuguese (pt) Contraposição		116 702
7	Russian (ru) Закон контрапозиции		84 564
8	Polish (pl) Prawo kontrapozycji		75 571
9	Korean (ko) 대우 (논리학)		66 359
10	Persian (fa) عکس نقیض		50 619

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 "Contraposição" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Contraposition		7 363
2	Japanese (ja) 対偶 (論理学)		1 233
3	French (fr) Proposition contraposée		909
4	Chinese (zh) 逆否命题		607
5	Spanish (es) Contraposición lógica		561
6	Korean (ko) 대우 (논리학)		510
7	German (de) Kontraposition		468
8	Russian (ru) Закон контрапозиции		245
9	Simple English (simple) Contraposition		210
10	Polish (pl) Prawo kontrapozycji		204

More...

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

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

#	Language	AI award	Relative AI
1	English (en) Contraposition		215
2	French (fr) Proposition contraposée		68
3	Spanish (es) Contraposición lógica		46
4	German (de) Kontraposition		33
5	Japanese (ja) 対偶 (論理学)		21
6	Russian (ru) Закон контрапозиции		19
7	Dutch (nl) Bewijs door contrapositie		16
8	Danish (da) Kontraposition		14
9	Polish (pl) Prawo kontrapozycji		14
10	Ukrainian (uk) Контрапозиція		11

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 "Contraposição" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Arabic (ar) عكس نقيض		1
2	Catalan (ca) Contraposició lògica		0
3	Danish (da) Kontraposition		0
4	German (de) Kontraposition		0
5	English (en) Contraposition		0
6	Spanish (es) Contraposición lógica		0
7	Persian (fa) عکس نقیض		0
8	French (fr) Proposition contraposée		0
9	Galician (gl) Contraposición		0
10	Hebrew (he) קונטרה פוזיטיב		0

More...

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

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

#	Language	CI award	Relative CI
1	English (en) Contraposition		158
2	French (fr) Proposition contraposée		110
3	Swedish (sv) Kontraposition		57
4	Spanish (es) Contraposición lógica		51
5	Polish (pl) Prawo kontrapozycji		44
6	Japanese (ja) 対偶 (論理学)		34
7	German (de) Kontraposition		23
8	Ukrainian (uk) Контрапозиція		21
9	Portuguese (pt) Contraposição		18
10	Korean (ko) 대우 (논리학)		17

More...

#	Language	Value
ar	Arabic عكس نقيض
ca	Catalan Contraposició lògica
da	Danish Kontraposition
de	German Kontraposition
en	English Contraposition
es	Spanish Contraposición lógica
fa	Persian عکس نقیض
fr	French Proposition contraposée
gl	Galician Contraposición
he	Hebrew קונטרה פוזיטיב
it	Italian Contrapposizione
ja	Japanese 対偶 (論理学)
ko	Korean 대우 (논리학)
nl	Dutch Bewijs door contrapositie
pl	Polish Prawo kontrapozycji
pt	Portuguese Contraposição
ru	Russian Закон контрапозиции
simple	Simple English Contraposition
sr	Serbian Контрапозиција
sv	Swedish Kontraposition
uk	Ukrainian Контрапозиція
zh	Chinese 逆否命题

Best Rank

Portuguese: #32372 08.2016

Global: #50771 10.2020

Best Rank

Portuguese: #26770 04.2013

Global: #332 01.2002

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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