(mathematics) A formal power series with one indeterminate, whose coefficients are fractions with factorial denominators (of index corresponding to the power of the indeterminate) and numerators which represent a sequence of numbers that is to be studied.

(mathematical analysis) A kind of linear functional which yields a non-negative scalar when given a non-negative function as parameter.

plural of non-functional requirement

(mathematics) A function of one real argument, whose value is zero when the argument is nonzero, and whose integral is one over any interval that includes zero.

(mathematics, computing theory) The mathematical function that maps each positive integer n to the number of steps required for the busy beaver among machines with two colors and n states to terminate.

plural of gain-of-function research

plural of iterated function system

(complex analysis) A complex function defined as E_𝛼,𝛽(z)=∑ₖ₌₀ ᪲(zᵏ)/(𝛤(𝛼k+𝛽)), where 𝛤(x) is the gamma function.

(medicine, virology) Medical research that alters an organism or disease in a way that increases pathogenesis, transmissibility, or host range.

An integrated circuit with a randomized physical structure, used in cryptography.