Identity
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Identity may refer to:

Philosophy

• Identity (philosophy), the sameness of two things
• Identity theory of mind, in the philosophy of mind, holds that the mind is identical to the brain
• Personal identity (philosophy)
• Identity (social science)
• Identity formation
• Law of identity, a principle of logic

Mathematics

• Identity (mathematics), an equality that holds regardless of the values of its variables
• Identity function, a function that does not alter its argument
• Identity element, a special element in a set or structure with respect to an operator
• Identity matrix, a square matrix I with ones on the diagonal, zeros elsewhere

Social science and psychology

• Identity (social science), stemming from cognitive theory, sociology, politics, and psychology.
• Cultural identity, a person's self-affiliation (or categorization by others) as a member of a cultural group
• Gender identity, the gender with which a person identifies (or is identified by others)
• Psychological identity, an individual's unique identity that develops relatively late in his life. (see Identity formation)
• Online identity, established and used by computer network users (see also Digital identity in Computer Science)
• National identity, belief in membership of a nation.

In some countries where there is more than one "nation" in the state or identity is otherwise confused, there may be a debate over what the nation's real identity is, see:

• Britishness, Scottish national identity
• Canadian identity, Québécois nation motion

Business

• Accounting identity, a basic accounting relation that must hold by definition
• Corporate identity, the physical manifestation of a business brand
• Identity theft, the deliberate appropriation of someone else's identity (without that person's permission) for criminal purposes

Computer science

• Digital identity, the representation of identity in terms of digital information (see also online identity in social science)
• Federated identity, identity management with defined trust relations between independent principals
• Laws of identity[1], laws that define a unifying identity metasystem
• Identity (object-oriented programming), a property of objects that allows those objects to be distinguished from each other.
• Identity column in SQL Server, a database field whose values uniquely identify a row in the table

Religion

• Christian Identity, a Christian religious movement

Television, film, music and literature

• Identity (novel), by Milan Kundera
• Identity (film), directed by James Mangold and starring John Cusack
• Identity (album), by Zee with Richard Wright and Dave Harris
• Identity (music), a transformation of pitches in music
• Identity (game show), a short lived game show
• "Identity" (Law & Order: Special Victims Unit), an episode of Law & Order: Special Victims Unit
• Identity, an episode of the USA Network television show Burn Notice.
• Identify (song), a Natalie Imbruglia song
• iD_eNTITY, a manhwa

See also

• Secret identity (disambiguation)
• Identity theft
• Identity document
• Identification (disambiguation)
• Biometrics
• Entity

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