Sigma

Quality:

Σ - eighteenth letter of the Greek alphabet. Article “Sigma” in Vietnamese Wikipedia has 16.7 points for quality (as of July 1, 2026). The article contains 2 references and 5 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 0.88 points.

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

Since the creation of article “Sigma”, its content was written by 23 registered users of Vietnamese Wikipedia and edited by 2061 registered Wikipedia users in all languages.

The article is cited 50 times in Vietnamese Wikipedia and cited 3942 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Vietnamese): #463 in October 2024
• Global: #1074 in February 2025

The highest popularity rank from 2008:

• Local (Vietnamese): #83 in December 2022
• Global: #4301 in December 2022

There are 49 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) Sigma		45.9247
2	French (fr) Sigma		45.1344
3	Greek (el) Σίγμα		30.2643
4	Ukrainian (uk) Сигма		29.6881
5	Spanish (es) Σ		29.2045
6	Simple English (simple) Sigma		28.835
7	Thai (th) ซิกมา		28.4886
8	Catalan (ca) Sigma		23.5694
9	Arabic (ar) سيغما		22.135
10	Romanian (ro) Sigma (literă)		21.9362

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

#	Language	Popularity award	Relative popularity
1	English (en) Sigma		9 429 710
2	German (de) Sigma		1 911 557
3	Russian (ru) Сигма (буква)		1 811 139
4	Japanese (ja) Σ		1 750 007
5	Spanish (es) Σ		1 709 700
6	French (fr) Sigma		967 379
7	Polish (pl) Sigma		903 896
8	Portuguese (pt) Σ		879 112
9	Italian (it) Sigma		829 249
10	Chinese (zh) Σ		665 984

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) Sigma		23 873
2	German (de) Sigma		3 833
3	Russian (ru) Сигма (буква)		3 596
4	Spanish (es) Σ		3 164
5	French (fr) Sigma		2 859
6	Polish (pl) Sigma		2 431
7	Japanese (ja) Σ		1 876
8	Italian (it) Sigma		1 654
9	Portuguese (pt) Σ		1 519
10	Chinese (zh) Σ		1 422

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

#	Language	AI award	Relative AI
1	English (en) Sigma		401
2	German (de) Sigma		148
3	French (fr) Sigma		134
4	Italian (it) Sigma		106
5	Russian (ru) Сигма (буква)		92
6	Spanish (es) Σ		77
7	Dutch (nl) Sigma (letter)		75
8	Polish (pl) Sigma		75
9	Hebrew (he) סיגמא		68
10	Japanese (ja) Σ		65

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	Spanish (es) Σ		4
2	Czech (cs) Sigma		2
3	French (fr) Sigma		2
4	Italian (it) Sigma		1
5	Korean (ko) Σ		1
6	Arabic (ar) سيغما		0
7	Azerbaijani (az) Siqma		0
8	Belarusian (be) Сігма (літара)		0
9	Bulgarian (bg) Сигма		0
10	Catalan (ca) Sigma		0

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

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 Vietnamese Wikipedia the most popular articles on that day were: Bảng xếp hạng bóng đá nam FIFA, Phanxicô Xaviê Trương Bửu Diệp, Đài Truyền hình Kỹ thuật số VTC, XNXX, Giải vô địch bóng đá thế giới 2026, Cộng hòa Dân chủ Congo, Đội tuyển bóng đá quốc gia Cộng hòa Dân chủ Congo, Da Lab, Kylian Mbappé, La Văn Cầu.

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