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).

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

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

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

(computer science) Alternative form of partial application

plural of partial function application

(mathematics, mathematical analysis) The alternating sum of the Dirichlet series expansion of the Riemann zeta function: 𝜂(s)=∑ₙ₌₁ ᪲(-1)ⁿ⁻¹/nˢ=1/(1ˢ)-1/(2ˢ)+1/(3ˢ)-1/(4ˢ)+⋯.

(aerodynamics) A function describing the angle through which a flow can turn isentropically for the given initial and final Mach number.

(computing, database normalization) A functional dependency of an attribute on a superset of itself.

(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.