function
association of a single output to each input
Schwinger function
euclidean Wightman distributions
Semigroup action
an action or act of a semigroup on a set
even function
function which is symmetric with respect to the vertical axis
semi-invariant of a quiver
function on the set of representations of a given quiver, which is invariant under simultaneous base change up to a character
spectral line shape
in spectroscopy, the form of a feature corresponding to an energy change in an atom, molecule, or ion
flow
function that assigns a number to each edge of a flow network
valuation
in geometry
Interleaving distance
method of comparing two persistence modules
disturbance variable
in control engineering, a variable that has a disturbing effect on the controlled variable
injection
mathematical function that preserves distinctness
field
physical quantity, represented by a number or tensor, that has a value for each point in space-time
transfer function
function specifying the behavior of a component in an electronic or control system
Ackermann function
total non-primitive-recursive computable function
vertex function
describes the coupling between a photon and an electron
mapping
binary relation which is left-total (defined on all its input set)
indicator function
function that returns 1 if an element is present in a specified subset and 0 if absent; naturally isomorphic with a set's subsets
moment-generating function
concept in probability theory and statistics
plant
in control theory, the combination of process and actuator
expenditure function
method for calculating price of a utility
assignment function
mathematical map that assigns a truth value to each proposition
positive-operator-valued measure
measure whose values are positive semi-definite operators on a Hilbert space
loss function
in mathematical optimization, a function (to be minimized) representing the cost of each outcome
moving average
type of statistical measure over subsets of a dataset
isogonal conjugate
given a point P and a triangle ABC, the point constructed by reflecting the lines PA, PB, and PC about the angle bisectors of A, B, and C respectively
controller
a function that determines the time-varying input for a dynamic system, for example for reference tracking
spectral density
relative importance of certain frequencies in a composite signal
permanent
polynomial of the elements of a matrix
well-posed problem
functional relationship F between some input x and output y such that y=g(x) and g is Lipschitz in a neighbourhood of every x
indirect utility function
function
social welfare function
function that ranks states of society according to their desirability
partial function
function whose actual domain of definition may be smaller than its input set
signed measure
generalized notion of measure in mathematics
lowest common denominator
the lowest common multiple of the denominators of a set of fractions
curve
tonality map in image editing
Hartley function
measure of uncertainty, introduced by Ralph Hartley in 1928
Kasner metric
solution of Einstein field equations
operation
mathematical procedure which produces a result from one or more input values
cardinal function
function that returns cardinal numbers
covariance function
Function in probability theory
envelope
function describing the extremes of an oscillating signal
Fox derivative
Concept in mathematics
Napierian logarithm
mathematical function
Ideal norm
the ideal-theoretic generalization of the field norm
Modular lambda function
a highly symmetric holomorphic function on the complex upper half-plane
ranking function
sorting method in information retrieval
rectifier
activation function defined as the identity function for positive arguments and zero for negative arguments