plural of Riemann zeta function

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

plural of spatial wave function

(physics) A separable wavefunction times e^(iEt/ hbar), which is thus a function of only space and not time.

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

(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) 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.

(psychiatry) A form of autism associated with lesser cognitive ability (an IQ of 70 or lower).

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

(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.