### fixpoint ⇝

## fixed point

(mathematics) The fixed point of a function, f is any value, x for which f x = x. A function may have any number of fixed points from none (e.g. f x = x+1) to infinitely many (e.g. f x = x). The fixed point combinator, written as either "fix" or "Y" will return the fixed point of a function.

See also least fixed point.

Last updated: 1995-04-13

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