First-order — First or der, a. decaying at an exponential rate; a mathematical concept applied to various types of decay, such as radioactivity and chemical reactions. Note: In first order decay, the amount of material decaying in a given period of time is… … The Collaborative International Dictionary of English
First-order logic — is a formal logical system used in mathematics, philosophy, linguistics, and computer science. It goes by many names, including: first order predicate calculus, the lower predicate calculus, quantification theory, and predicate logic (a less… … Wikipedia
first order of business — UK US noun [C] (plural first orders of business) ► a situation or subject that must be dealt with before anything else: »When the financial situation gets difficult, the first order of business is to define your goals and your priorities … Financial and business terms
first-order languages — first order language … Philosophy dictionary
First-order hold — The first order hold (FOH) is a mathematical model of the practical reconstruction of sampled signals that could be done by a conventional digital to analog converter (DAC) and an analog circuit called an integrator. For the FOH, the signal is… … Wikipedia
First-order control — In control theory, first order control is when a desired result is attempted by adjusting a scalar (first order) control. Such mechanisms, where first order change successfully produces desired results, are called first order mechanisms . First… … Wikipedia
First-order reduction — A first order reduction is a very weak type of reduction between two computational problems in computational complexity theory. A first order reduction is a reduction where each component is restricted to be in the class FO of problems calculable … Wikipedia
First order partial differential equation — In mathematics, a first order partial differential equation is a partial differential equation that involves only first derivatives of the unknown function of n variables. The equation takes the form: F(x 1,ldots,x n,u,u {x 1},ldots u {x n}) =0 … Wikipedia
First-order predicate — A first order predicate (also called a monad) is a predicate that takes only individual(s) constants or variables as argument(s). Compare second order predicate and higher order predicate. ee also*First order predicate calculus *Monadic predicate … Wikipedia
First-order elections — The term first order elections is used by political scientists to the relative importance of certain elections. First order elections are those that are the most important in a nation. In most democracies these are the national parliamentary… … Wikipedia
first-order phase change — pirmosios rūšies fazinis virsmas statusas T sritis fizika atitikmenys: angl. first order phase change; first order phase transition; phase transform of the first kind vok. Phasenumwandlung erster Ordnung, f rus. фазовое превращение первого рода,… … Fizikos terminų žodynas
