(physics) The minimum energy needed to remove an electron from the surface of a material

(physics) A function which describes the intensity of scattered radiation in any given direction

(computing) Any function that uses recursion and can call itself until a certain condition is met

(mathematics, complex analysis, algebraic geometry) Any function expressible as the quotient of two (coprime) polynomials (and which thus has poles at a finite, discrete set of points which are the roots of the denominator).

(computing) A function used in an operating system that is not available to application programs.

(mathematics) Any function whose range is n-dimensional

plural of logistic function

plural of complementary function

plural of entire function

(mathematics) Any function whose values remain bounded by some constant.