(mathematics) function giving the statistical correlation between random variables at two different points in space or time

(mathematics, physics) A function of seven variables of the form f(x,y,z,t;v_x,v_y,v_z) that gives the number of particles per unit volume in single-particle phase space.

(logic) Synonym of Boolean function

(mathematics) generalization of the definition of a partition function in statistical mechanics / (number theory) function that represents the number of possible partitions of a natural number.

(mathematics) Either of two functions that are solutions to Bessel's equation.

(mathematics) A function used to predict a categorical dependent variable by one or more continuous or binary independent variables.

(mathematics) A function used to plot streamlines that represent the trajectories of particles in a steady flow.

(mathematics) a function used to calculate the distance between two points. / (topology) a metric.

(mathematics) A formal power series with one indeterminate, whose coefficients encode a sequence that can be studied by algebraic manipulation of the series; any one of several generalizations, such as to encode more than one sequence or use more than one indeterminate.

(mathematics) function of the complex variable s that analytically continues the sum of the infinite series ∑ₙ₌₁ ᪲1/(nˢ) that converges when the real part of s is greater than 1.