(astronomy, mathematics) A relationship that describes the mass distribution.

plural of unit function

(mathematics) function giving the statistical correlation between random variables at two different points in space or time

plural of zeta function

(systems theory) A function that controls the recording, processing, transmission, or interpretation of data.

plural of hyperbolic function

(set theory) A function whose domain is a family of nonempty sets, and which selects a member from each of those sets as its value.

(mathematical analysis) A generalization of the hyperfactorial function in mathematics to real and complex numbers.

(computer science) The negative of the convex function.

(computer science) A mathematical function whose input is a set (usually of real numbers or a set of points in the Euclidean or some measure space), and whose output is usually a number.