An identity function, also called an identity relation, identity map or identity transformation, is a function that always returns exactly the value given to it as its argument, unchanged; when f is the identity function, the equality f(x) equals x holds for every value of x to which f can be applied. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Connections
In Branch
Source Wolfram MathWorld: Identity Function
Is Kind Of Object
Sources
1. Identity Function (Wikipedia)
Lead sectionQuote, Lead section
In mathematics, an identity function, also called an identity relation, identity map or identity transformation, is a function that always returns the value that was used as its argument, unchanged.
Wolfram MathWorld: Identity Function
Wolfram MathWorldIn Branch: Analysis, Subject classificationsQuote, In Branch: Analysis, Subject classifications
Calculus and Analysis Special Functions
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.