plural of arithmetic function

(mathematics) A function whose range is a subset of the set of real numbers.

(mathematics) A function whose range is a subset of the set of complex numbers.

(economics) A function that describes the relationship between consumption and disposable income.

plural of consumption function

plural of Brillouin function

(mathematics) a function that has derivatives of all finite orders everywhere in its domain.

plural of smooth function

plural of beta function

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).