(mathematics) Either of a pair of functions that have the same domain and that the values of one are equal to or greater than the other for all points in that domain.

(mathematics) Any function whose value is zero except for a finite part of its argument for which it has a constant non-zero value

(mathematics) Any function in which the interchange of two independent variables changes the sign of the dependent variable.

(mathematics) A function whose value is the same for all the elements of its domain.

(mathematics) A function of one or more independent variables, at least one of which is itself a function of one or more other independent variables; a function of function(s).

(mathematics) Any function of a complex variable that is holomorphic throughout the complex plane

Any mathematical relationship between an activity and its cost.

(mathematics) Any function that is a solution of the Bessel equation

(computing) Any character used to specify a function of a piece of software or hardware (such as carriage return of a printer)

(mathematics) Any function of a real variable whose value decreases (or is constant) as the variable increases.