(mathematics) In harmonic analysis, any of a complete orthogonal set of functions that can be used to represent any discrete function.

(combinatorics) A Boolean function f: Z ₂ⁿ→ Z ₂ whose Walsh transform has constant absolute value.

plural of Walsh function

(mathematics) A function obtained from a continuous function by transfinite iteration of the operation of forming pointwise limits of sequences of functions.

plural of Baire function

plural of functional root

(physics) A function, denoted by Ai(x), that is a solution to the Airy equation.

plural of objective function

plural of member function

(programming) A function that belongs to a class and can be called on instances of the object defined by that class.