# exact

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**Exact test**— In statistics, an exact (significance) test is a test where all assumptions upon which the derivation of the distribution of the test statistic is based are met, as opposed to an approximate test, in which the approximation may be made as close… …82

**Exact differential**— In mathematics, a differential dQ is said to be exact , as contrasted with an inexact differential, if the differentiable function Q exists. However, if dQ is arbitrarily chosen, a corresponding Q might not exist. OverviewIn one dimension, a… …83

**Exact solutions in general relativity**— In general relativity, an exact solution is a Lorentzian manifold equipped with certain tensor fields which are taken to model states of ordinary matter, such as a fluid, or classical nongravitational fields such as the electromagnetic field.… …84

**exact equation**— type of differential equation that can be solved directly without the use of any of the special techniques in the subject. A first order differential equation (of one variable) is called exact, or an exact differential, if it is the result… …85

**Exact division**— An exact or even division is a type of fair division where all the players believe everyone received the same amount.There is no finite procedure for exact division but there are moving knife procedures for two players. For more than two players… …86

**EXACT, ACTE**— adj. Qui fait en temps voulu ce qu’il doit faire, qui est ponctuel. Il est toujours exact aux rendez vous. Il n’est guère exact dans l’accomplissement de ses devoirs. Exact à payer aux échéances. On dit aussi Arriver à l’heure exacte, à l’heure… …87

**Exact differential equation**— In mathematics, an exact differential equation or total differential equation is a certain kind of ordinary differential equation which is widely used in physics and engineering. Definition Given a simply connected and open subset D of R2 and two …88

**Exact sciences (The) in Hellenistic times: texts and issues**— The exact sciences in Hellenistic times: Texts and issues1 Alan C.Bowen Modern scholars often rely on the history of Greco Latin science2 as a backdrop and support for interpreting past philosophical thought. Their warrant is the practice… …89

**Exact cover**— In mathematics, given a set X and a collection mathcal{S} of subsets of X , an exact cover mathcal{S}^* is a subcollection of mathcal{S} such that every element in X is contained in exactly one set in mathcal{S}^*. An exact cover is a kind of… …90

**Exact Audio Copy**— Infobox Software name = Exact Audio Copy caption = Exact Audio Copy running under Linux, through Wine developer = Andre Wiethoff latest release version = 0.99 prebeta 4 latest release date = 31 January 2008 operating system = Windows genre = CD… …