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.

Read more about Identity Function:  Definition, Algebraic Property, Properties

Famous quotes containing the words identity and/or function:

    When I quit working, I lost all sense of identity in about fifteen minutes.
    Paige Rense (b. 1929)

    The fact remains that the human being in early childhood learns to consider one or the other aspect of bodily function as evil, shameful, or unsafe. There is not a culture which does not use a combination of these devils to develop, by way of counterpoint, its own style of faith, pride, certainty, and initiative.
    Erik H. Erikson (1904–1994)