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

plural of smooth function

plural of beta function

A beverage with added functionality or ingredients and consumed for its supposed health benefits.

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

(mathematics) Any of the elements of the Bloch space.

plural of Bloch function

A special function that appears when studying an idealized paramagnetic material in statistical mechanics.

plural of functional beverage

(mathematics) An element of the range of a function. (Or, employing the "machine" metaphor, it is one of the "outputs" of a function.)