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Look up function or functionality in Wiktionary, the free dictionary. Function or functionality may refer to: Function key, a type of key on computer keyboards...

mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the...

Bessel function. Although α {\displaystyle \alpha } and − α {\displaystyle -\alpha } produce the same differential equation, it is conventional to define...

A sigmoid function refers specifically to a function whose graph follows the logistic function. It is defined by the formula: σ ( x ) = 1 1 + e − x = e...

an injective function (also known as injection, or one-to-one function ) is a function f that maps distinct elements of its domain to distinct elements;...

mathematics, the gamma function (represented by Γ, capital Greek letter gamma) is the most common extension of the factorial function to complex numbers. Derived...

A hash function is any function that can be used to map data of arbitrary size to fixed-size values, though there are some hash functions that support...

In mathematics, a monotonic function (or monotone function) is a function between ordered sets that preserves or reverses the given order. This concept...

In quantum physics, a wave function (or wavefunction) is a mathematical description of the quantum state of an isolated quantum system. The most common...

function may refer to: Recursive function (programming), a function which references itself General recursive function, a computable partial function...

A likelihood function (often simply called the likelihood) measures how well a statistical model explains observed data by calculating the probability...

X} is a real-valued function with only some of the properties of a seminorm. Unlike seminorms, a sublinear function does not have to be nonnegative-valued...

A logistic function or logistic curve is a common S-shaped curve (sigmoid curve) with the equation f ( x ) = L 1 + e − k ( x − x 0 ) {\displaystyle f(x)={\frac...

analytic function is a function that is locally given by a convergent power series. There exist both real analytic functions and complex analytic functions. Functions...

In mathematics, a differentiable function of one real variable is a function whose derivative exists at each point in its domain. In other words, the...

In mathematics, a Gaussian function, often simply referred to as a Gaussian, is a function of the base form f ( x ) = exp ⁡ ( − x 2 ) {\displaystyle f(x)=\exp(-x^{2})}...

mathematics, a real-valued function is called convex if the line segment between any two distinct points on the graph of the function lies above or on the graph...

In mathematics, a basis function is an element of a particular basis for a function space. Every function in the function space can be represented as...

Tau function may refer to: Tau function (integrable systems), in integrable systems Ramanujan tau function, giving the Fourier coefficients of the Ramanujan...

generally refers to the positive-valued function of a real variable, although it can be extended to the complex numbers or generalized to other mathematical...