Natural deduction

Natural deduction - kind of proof calculus. Article “Natural deduction” in English Wikipedia has 57.8 points for quality (as of July 1, 2026). The article contains 79 references and 29 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 6.42 points.

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

In June 2026 the article “Natural deduction” was edited by 1 authors in English Wikipedia and written by 2 authors in all languages.

Since the creation of article “Natural deduction”, its content was written by 118 registered users of English Wikipedia and edited by 379 registered Wikipedia users in all languages.

The article is cited 405 times in English Wikipedia and cited 1184 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #5932 in May 2002
• Global: #7381 in May 2002

The highest popularity rank from 2008:

• Local (English): #168183 in October 2008
• Global: #156411 in December 2008

There are 19 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, 2026 (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) Natural deduction		57.7504
2	Chinese (zh) 自然演绎		41.4329
3	French (fr) Déduction naturelle		27.5642
4	Persian (fa) استنتاج طبیعی		25.3608
5	German (de) Systeme natürlichen Schließens		25.1029
6	Japanese (ja) 自然演繹		18.2581
7	Spanish (es) Deducción natural		16.6882
8	Portuguese (pt) Dedução natural		15.314
9	Indonesian (id) Deduksi natural		11.8282
10	Simple English (simple) Natural deduction		11.7833

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

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

#	Language	Popularity award	Relative popularity
1	English (en) Natural deduction		756 090
2	Japanese (ja) 自然演繹		142 145
3	German (de) Systeme natürlichen Schließens		130 527
4	Spanish (es) Deducción natural		123 379
5	French (fr) Déduction naturelle		121 260
6	Portuguese (pt) Dedução natural		79 116
7	Chinese (zh) 自然演绎		58 349
8	Polish (pl) Dedukcja naturalna		51 928
9	Romanian (ro) Deducție		29 577
10	Italian (it) Deduzione naturale		29 285

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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 "Natural deduction" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Natural deduction		2 112
2	Japanese (ja) 自然演繹		435
3	French (fr) Déduction naturelle		298
4	Chinese (zh) 自然演绎		291
5	German (de) Systeme natürlichen Schließens		281
6	Spanish (es) Deducción natural		121
7	Russian (ru) Натуральный вывод		90
8	Portuguese (pt) Dedução natural		81
9	Italian (it) Deduzione naturale		66
10	Korean (ko) 자연 연역		57

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

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

#	Language	AI award	Relative AI
1	English (en) Natural deduction		118
2	German (de) Systeme natürlichen Schließens		60
3	French (fr) Déduction naturelle		58
4	Dutch (nl) Natuurlijke deductie		18
5	Japanese (ja) 自然演繹		17
6	Italian (it) Deduzione naturale		16
7	Chinese (zh) 自然演绎		16
8	Polish (pl) Dedukcja naturalna		12
9	Spanish (es) Deducción natural		11
10	Portuguese (pt) Dedução natural		9

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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 "Natural deduction" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) Natural deduction		1
2	Japanese (ja) 自然演繹		1
3	German (de) Systeme natürlichen Schließens		0
4	Spanish (es) Deducción natural		0
5	Persian (fa) استنتاج طبیعی		0
6	Finnish (fi) Luonnollinen päättely		0
7	French (fr) Déduction naturelle		0
8	Indonesian (id) Deduksi natural		0
9	Italian (it) Deduzione naturale		0
10	Korean (ko) 자연 연역		0

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

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

#	Language	CI award	Relative CI
1	English (en) Natural deduction		405
2	Portuguese (pt) Dedução natural		177
3	French (fr) Déduction naturelle		131
4	Japanese (ja) 自然演繹		107
5	Russian (ru) Натуральный вывод		97
6	Chinese (zh) 自然演绎		88
7	German (de) Systeme natürlichen Schließens		39
8	Korean (ko) 자연 연역		32
9	Spanish (es) Deducción natural		29
10	Simple English (simple) Natural deduction		20

More...

#	Language	Value
de	German Systeme natürlichen Schließens
en	English Natural deduction
es	Spanish Deducción natural
fa	Persian استنتاج طبیعی
fi	Finnish Luonnollinen päättely
fr	French Déduction naturelle
id	Indonesian Deduksi natural
it	Italian Deduzione naturale
ja	Japanese 自然演繹
ko	Korean 자연 연역
nl	Dutch Natuurlijke deductie
no	Norwegian Naturlig deduksjon
pl	Polish Dedukcja naturalna
pt	Portuguese Dedução natural
ro	Romanian Deducție
ru	Russian Натуральный вывод
simple	Simple English Natural deduction
sv	Swedish Naturlig deduktion
zh	Chinese 自然演绎

Best Rank

English: #168183 10.2008

Global: #156411 12.2008

Best Rank

English: #5932 05.2002

Global: #7381 05.2002

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information