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:
“Growing has no connection with audience. / Audience has no
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—Gertrude Stein (1874–1946)
“The intension of a proposition comprises whatever the proposition entails: and it includes nothing else.... The connotation or intension of a function comprises all that attribution of this predicate to anything entails as also predicable to that thing.”
—Clarence Lewis (1883–1964)