(mathematics) A function derived from the probability distribution of a random variable.

(mathematics) A certain arithmetic function that is neither multiplicative nor additive. It is denoted by Λ(n) and defined as :𝛬(n)= log p mbox ifn=pᵏ mbox forsomeprimep mbox andintegerk>1,\0 mbox otherwise.

A measure of acidity used for very concentrated solutions of strong acids, including superacids.

A function which at each point t of the sample space has as its value the probability that a given random variable is less than (or equal) t. In symbols, F_X(t)=Pr(X<t).

plural of number-theoretic function

(mathematics) a real or complex valued function of n defined on the set of natural numbers that expresses some arithmetical property of n.

plural of moment-generating function

plural of black-box function

(optimization) A function whose closed-form expression is not known or does not exist, and whose properties cannot be inferred.

Functional magnetic resonance imaging.