equivalence sign
81Orientation (mathematics) — See also orientation (geometry). In mathematics, an orientation on a real vector space is a choice of which ordered bases are positively oriented and which are negatively oriented. In the three dimensional Euclidean space, the two possible basis… …
82Formation de base aux premiers secours — « AFPS » redirige ici. Pour les autres significations, voir AFPS (homonymie). Les formations de base aux premiers secours sont des formations courtes permettant d assimiler la conduite à tenir dans le cas d un événement imprévu… …
83Interaction gravitationnelle de l'antimatière — L interaction gravitationnelle de l antimatière avec la matière ou avec l antimatière n a pas été observée par les physiciens dans des conditions permettant d en tirer des conclusions. Un consensus écrasant règne parmi les physiciens selon lequel …
84WEIGHTS AND MEASURES — From the earliest period of their history the Jews were alive to the necessity of an accurate system of weights and measures, and an honest handling of them. The first legislation in the interest of economic righteousness in general is found in… …
85Floating point — In computing, floating point describes a method of representing real numbers in a way that can support a wide range of values. Numbers are, in general, represented approximately to a fixed number of significant digits and scaled using an exponent …
86Entailment — For other uses, see Entail (disambiguation). In logic, entailment is a relation between a set of sentences (e.g.,[1] meaningfully declarative sentences or truthbearers) and a sentence. Let Γ be a set of one or more sentences; let S1 be the… …
87Knot theory — A three dimensional depiction of a thickened trefoil knot, the simplest non trivial knot …
88Logical implication — In logic and mathematics, logical implication is a logical relation that holds between a set T of formulae and a formula B when every model (or interpretation or valuation) of T is also a model of B . In symbols,# T models B, # T Rightarrow B # T …
89List of basic discrete mathematics topics — Discrete mathematics, also called finite mathematics, is the study of mathematical structures that are fundamentally , in the sense of not supporting or requiring the notion of continuity. Most, if not all, of the objects studied in finite… …
90Generalized continued fraction — In analysis, a generalized continued fraction is a generalization of regular continued fractions in canonical form in which the partial numerators and the partial denominators can assume arbitrary real or complex values.A generalized continued… …
