- identity function
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A function whose value is always the same as its independent variable
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identity function
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Identity function — In mathematics, an identity function, also called identity map or identity transformation, is a function that always returns the same value that was used as its argument. In terms of equations, the function is given by f ( x ) = x… … Wikipedia
identity function — noun : a function (as f(x)) that is everywhere equal in value to the value of its independent variable (as x) … Useful english dictionary
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 … Wikipedia
Function (mathematics) — f(x) redirects here. For the band, see f(x) (band). Graph of example function, In mathematics, a function associates one quantity, the a … Wikipedia
Identity (mathematics) — For other uses, see Identity (disambiguation). In mathematics, the term identity has several different important meanings: An identity is a relation which is tautologically true. This means that whatever the number or value may be, the answer… … Wikipedia
Identity element — In mathematics, an identity element (or neutral element) is a special type of element of a set with respect to a binary operation on that set. It leaves other elements unchanged when combined with them. This is used for groups and related… … Wikipedia
Identity matrix — In linear algebra, the identity matrix or unit matrix of size n is the n by n square matrix with ones on the main diagonal and zeros elsewhere. It is denoted by I n , or simply by I if the size is immaterial or can be trivially determined by the… … Wikipedia
Identity (music) — In music, identity is similar to identity in universal algebra. An identity function is a permutation or transformation which transforms a pitch or pitch class set into itself. For instance, inverting an augmented triad or C4 interval cycle, 048 … Wikipedia
Identity map — This article is about the Identity Map software design pattern. For the mathematical concept, see Identity function. An identity map is a database access design pattern used to improve performance by providing a context specific in memory cache… … Wikipedia
Identity control theory — Identity Control Theory, created by Peter Burke, focuses on the nature of peoples identities and the relationship between their identities and their behavior within the realm of their social structure. The identities of the individual are rooted… … Wikipedia
