A Sengupta

Using the Authority control template

Authority control systems assign a unique identifier to each topic, to allow precise identification of topics, and enable more accurate searches. The entries typically correspond to people, book titles, and similar well-defined entities.

The {{Authority control}} template links Wikipedia articles to the corresponding entries in library catalogs of national libraries and other authority files all over the world. This is why you may see several code numbers listed. As an example, the Wikipedia authority control information for the Alexander Graham Bell article looks like this:

Prior tip – Tips library – Next tip

Read more:

WP:Authority control (for editors)

Help:Authority control (for readers)

Become a Wikipedia tipster

To add this auto-updating template to your user page, use {{totd}}

Wikipedia:Babel

en

This user is a native speaker of the English language.

hi-3

इस उपयोगकर्ता को हिन्दी भाषा का प्रवीण स्तर का ज्ञान है।

fr-1

Cet utilisateur peut contribuer avec un niveau élémentaire de français.

Search user languages

This user contributes using Firefox.

This user is an Indian Wikipedian.

This user maintains a strict policy advising against all personal attacks.

This user strives to maintain a policy of neutrality on controversial issues.

This user maintains a Facebook profile.

This user is a proud contributor to Uncyclopedia.

This user maintains a blog at Your Blog's Name.

G

This user will use Google before asking dumb questions.

This user uses Wikipedia as a primary point of reference.

This user uses Gmail as a primary email service.

This user contributes while using VLC media player.

This user contributes while using Winamp.

This user contributes using Adobe Photoshop.

This user uses Windows XP.

a²+b²=c²

This user is an intermediate mathematician.

This user knows how to
Find x.

0.{\bar {9}}

=1

This user knows that 0.999... is exactly 1, but acquired a migraine learning it.

\sum _{k=1}^{\infty }{x^{k} \over k!}

This user loves problem solving.

This user is a university student.

This user is a child at heart. They might have grown older, but they'll never grow up.

The bearer of this is a Wikipedian who shall be permitted to freely edit Wikipedia.

This user is a
Citizen of the Galaxy ‡
and nothing else matters.

This user is a Francophile.

This user is an engineer.

This user exists. This is not claiming that this user is not a bot, sockpuppet, blocked user, or inactive user, it is just stating that this user EXISTS. He/She/It/They would like to point out that the reader must exist as well.

Existent

Authority control databases – Alexander Graham Bell
International	ISNI VIAF FAST WorldCat
National	Germany United States France BnF data Japan Italy Australia Czech Republic Spain Portugal Netherlands Norway Chile Greece Korea Poland Vatican Israel
Academics	CiNii Scopus Leopoldina
Artists	ULAN MusicBrainz
People	Trove Deutsche Biographie DDB
Other	IdRef NARA SNAC