(UK, Ireland) A travelling amusement park.

(mathematics) A function that either never decreases or never increases as its independent variable increases.

(calculus) A function f : X→R (where X is a subset of R, possibly a discrete set) that either never decreases or never increases as its independent variable increases; that is, either x ≤ y implies f(x) ≤ f(y) or x ≤ y implies f(y) ≤ f(x).

(computer science) A function that takes one or more functions as an input, and returns a function as a result.

(mathematics) A function to be maximized or minimized in optimization theory.

(number theory, analytic number theory, uncountable) The function ζ defined by the Dirichlet series 𝜁(s)=∑ₙ₌₁ ᪲1/(nˢ)=1/(1ˢ)+1/(2ˢ)+1/(3ˢ)+1/(4ˢ)+⋯, which is summable for points s in the complex half-plane with real part > 1; the analytic continuation of said function, being a holomorphic function defined on the complex numbers with pole at 1.

(comics) The section of a newspaper containing comic strips.

(biochemistry, genetics) A genomics branch that measures expression levels of RNAs and proteins to understand biological functions of a set of genes in cells.

(game theory) A mathematical function that assigns a real number to every element of the outcome space in a way that captures the agent's preferences over both simple and compound lotteries.

(game theory) A mathematical function describing the award given to a single player at the outcome of a game.