Klein bottle

Quality:

Klein bottle - type of non-orientable surface. Article “Klein bottle” in Simple English Wikipedia has 30.4 points for quality (as of July 1, 2025). The article contains 1 references and 3 sections.

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

Since the creation of article “Klein bottle”, its content was written by 16 registered users of Simple English Wikipedia and edited by 1126 registered Wikipedia users in all languages.

The article is cited 8 times in Simple English Wikipedia and cited 1175 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #1125 in October 2016
• Global: #1334 in February 2002

The highest popularity rank from 2008:

• Local (Simple English): #346 in December 2010
• Global: #13338 in May 2014

There are 38 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) Klein bottle		59.03
2	Romanian (ro) Sticla lui Klein		39.4208
3	Tamil (ta) கிளெய்ன் புட்டி		34.8455
4	Vietnamese (vi) Chai Klein		34.5727
5	Esperanto (eo) Botelo de Klein		32.9338
6	Slovenian (sl) Kleinova steklenica		32.6026
7	Catalan (ca) Ampolla de Klein		32.4177
8	Simple English (simple) Klein bottle		30.3635
9	French (fr) Bouteille de Klein		29.1816
10	Russian (ru) Бутылка Клейна		28.5992

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

#	Language	Popularity award	Relative popularity
1	English (en) Klein bottle		4 845 078
2	Russian (ru) Бутылка Клейна		1 325 807
3	Japanese (ja) クラインの壺		1 126 078
4	German (de) Kleinsche Flasche		714 056
5	Chinese (zh) 克莱因瓶		622 813
6	Spanish (es) Botella de Klein		563 650
7	French (fr) Bouteille de Klein		479 068
8	Polish (pl) Butelka Kleina		323 149
9	Italian (it) Bottiglia di Klein		277 950
10	Korean (ko) 클라인 병		143 558

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Klein bottle		20 414
2	Japanese (ja) クラインの壺		4 311
3	Simple English (simple) Klein bottle		3 833
4	German (de) Kleinsche Flasche		3 707
5	Russian (ru) Бутылка Клейна		3 331
6	Italian (it) Bottiglia di Klein		2 460
7	French (fr) Bouteille de Klein		2 205
8	Chinese (zh) 克莱因瓶		2 128
9	Polish (pl) Butelka Kleina		1 759
10	Czech (cs) Kleinova láhev		1 358

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

#	Language	AI award	Relative AI
1	English (en) Klein bottle		291
2	German (de) Kleinsche Flasche		114
3	French (fr) Bouteille de Klein		93
4	Russian (ru) Бутылка Клейна		77
5	Japanese (ja) クラインの壺		57
6	Italian (it) Bottiglia di Klein		52
7	Polish (pl) Butelka Kleina		40
8	Chinese (zh) 克莱因瓶		40
9	Spanish (es) Botella de Klein		35
10	Swedish (sv) Kleinflaska		32

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

#	Language	AI award	Relative AI
1	English (en) Klein bottle		1
2	Arabic (ar) قارورة كلاين		0
3	Azerbaijani (az) Kleyn şüşəsi		0
4	Bulgarian (bg) Бутилка на Клайн		0
5	Catalan (ca) Ampolla de Klein		0
6	Czech (cs) Kleinova láhev		0
7	Danish (da) Kleinflaske		0
8	German (de) Kleinsche Flasche		0
9	Greek (el) Φιάλη του Κλάιν		0
10	Esperanto (eo) Botelo de Klein		0

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

On 28 January 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2025–26 UEFA Champions League, Nipah virus, Doomsday Clock, UEFA Champions League, Elena Rybakina, Donald Trump, 2026 European Men's Handball Championship, killing of Alex Pretti, Kristi Noem, deaths in 2026.

In Simple English Wikipedia the most popular articles on that day were: List of European countries, Black, Pornhub, XXXTentacion, XVideos, List of people who have walked on the Moon, Manon Bannerman, Ajit Pawar, List of U.S. states, List of sex positions.

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