equations of state

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• State variable — A state variable is an element of the set of variables that describe the state of a dynamical system.In case of simple mechanical systems, position coordinates and their derivates are typical state variables. Temperature, pressure, internal… …   Wikipedia

• state, equation of — Any of a class of equations that relate the pressure P, volume V, and temperature T of a given substance in thermodynamic equilibrium. For example, the equation PV = nRT, where n is the number of moles of gas and R is the universal gas constant,… …   Universalium

• Equations of motion — Classical mechanics Newton s Second Law History of classical mechanics  …   Wikipedia

• State observer — In control theory, a state observer is a system that models a real system in order to provide an estimate of its internal state, given measurements of the input and output of the real system. It is typically a computer implemented mathematical… …   Wikipedia

• State space (controls) — In control engineering, a state space representation is a mathematical model of a physical system as a set of input, output and state variables related by first order differential equations. To abstract from the number of inputs, outputs and… …   Wikipedia

• Équations — Équation (mathématiques)  Cet article concerne les équations mathématiques dans leur généralité. Pour une introduction au concept, voir Équation (mathématiques élémentaires).   …   Wikipédia en Français

• State of emergency — For other uses, see State of emergency (disambiguation). A state of emergency is a governmental declaration that may suspend some normal functions of the executive, legislative and judicial powers, alert citizens to change their normal behaviours …   Wikipedia

• state space — noun A mathematical model of a physical system as a set of input, output and state variables related by first order differential equations. See Also: phase space …   Wiktionary

• equations — e qua·tion || eɪʃn n. making equal; statement demonstrating the equality of two quantities (Mathematics); equally balanced state …   English contemporary dictionary

• Equation of state — In physics and thermodynamics, an equation of state is a relation between state variables.cite book | author=Perrot, Pierre | title=A to Z of Thermodynamics | publisher=Oxford University Press | year=1998 | id=ISBN 0 19 856552 6] More… …   Wikipedia

• Solutions of the Einstein field equations — Where appropriate, this article will use the abstract index notation. Solutions of the Einstein field equations are spacetimes that result from solving the Einstein field equations (EFE) of general relativity. Solving the field equations actually …   Wikipedia