A direct function (dfn, pronounced "dee fun") is an alternative way to define a function and operator (a higher-order function) in the programming language...

time-invariant (TI) system has a time-dependent system function that is not a direct function of time. Such systems are regarded as a class of systems...

tangent integral, polygamma function, Riemann zeta function, Dirichlet eta function, and Dirichlet beta function. The Clausen function of order 2 – often referred...

any measurable set is measurable. This is in direct analogy to the definition that a continuous function between topological spaces preserves the topological...

equation relates the pair correlation function to the direct correlation function. The direct correlation function is only used in connection with the OZ...

Direct democracy or pure democracy is a form of democracy in which the electorate decides on policy initiatives without elected representatives as proxies...

requirements of direct access of state spaces of large or variable-length keys. Use of hash functions relies on statistical properties of key and function interaction:...

Direct costs, in accounting, are costs directly accountable to a cost object (such as a particular project, facility, function, or product). The equivalent...

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

History of Functional Programming Languages" (PDF). Scholes, John. "Direct Functions in Dyalog APL" (PDF). Guard in Free On-Line Dictionary of Computing...

Bessel functions, first defined by the mathematician Daniel Bernoulli and then generalized by Friedrich Bessel, are canonical solutions y(x) of Bessel's...

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...

Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through...

function is represented as a parameter named "k": Note that in the CPS versions, the primitives used, like +& and *& are themselves CPS, not direct style...

a transfer function (also known as system function or network function) of a system, sub-system, or component is a mathematical function that models...

direct function syntax where the left (optional) and right arguments are denoted by the letters alpha and omega. For example, the following function computes...

communication systems, function generators, mixers, modulators, sound synthesizers and as part of a digital phase-locked loop. A basic Direct Digital Synthesizer...

rotation. The Gudermannian function gives a direct relationship between the circular functions and the hyperbolic functions that does not involve complex...

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

In electrical engineering, a function generator is usually a piece of electronic test equipment or software used to generate different types of electrical...

male that contribute towards the reproduction process. The primary direct function of the male reproductive system is to provide the male sperm for fertilization...

In mathematics, an even function is a real function such that f ( − x ) = f ( x ) {\displaystyle f(-x)=f(x)} for every x {\displaystyle x} in its domain...

common type of implicit function is an inverse function. Not all functions have a unique inverse function. If g is a function of x that has a unique inverse...

In mathematics, theta functions are special functions of several complex variables. They show up in many topics, including Abelian varieties, moduli spaces...

{\displaystyle \circ } takes two functions, f {\displaystyle f} and g {\displaystyle g} , and returns a new function h ( x ) := ( g ∘ f ) ( x ) = g (...

ordinary differential equations (ODEs), Lyapunov functions, named after Aleksandr Lyapunov, are scalar functions that may be used to prove the stability of...

In computer programming, a nested function (or nested procedure or subroutine) is a named function that is defined within another, enclosing, block and...

analysis, such as differentiability, are direct generalizations of the similar concepts for real functions, but may have very different properties. In...

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

cumulative distribution function (CDF) of a real-valued random variable X {\displaystyle X} , or just distribution function of X {\displaystyle X} ,...