quadrature of circle

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• Quadrature — Quadrature, derived from Latin quadrare , may refer to:In signal processing: *Quadrature amplitude modulation (QAM), a modulation method of using both a carrier wave and a quadrature carrier wave that is 90° out of phase with the main carrier… …   Wikipedia

• Quadrature — Quad ra*ture, n. [L. quadratura: cf. F. quadrature. See {Quadrate}, a.] 1. (Math.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an… …   The Collaborative International Dictionary of English

• Quadrature of an orbit — Quadrature Quad ra*ture, n. [L. quadratura: cf. F. quadrature. See {Quadrate}, a.] 1. (Math.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of… …   The Collaborative International Dictionary of English

• Quadrature of the moon — Quadrature Quad ra*ture, n. [L. quadratura: cf. F. quadrature. See {Quadrate}, a.] 1. (Math.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of… …   The Collaborative International Dictionary of English

• quadrature — [kwä′drə chər] n. [LL quadratura < L quadratus: see QUADRATE] 1. the act of squaring 2. the construction of a square equal in area to a given surface [the quadrature of a circle] 3. Astron. a configuration of a superior planet or the moon in… …   English World dictionary

• quadrature of the circle — a problem in mathematics that consists of finding the side of a square exactly equal in area to a given circular area and that has been shown to be impossible of solution by geometric methods limited to the use of ruler and compass alone * * *… …   Useful english dictionary

• Quadrature domains — In the branch of mathematics called potential theory, a quadrature domain in two dimensional real Euclidean space is a domain D (an open connected set) together witha finite subset { z 1, hellip;, z k } of D such that, for every function u… …   Wikipedia

• Quadrature du cercle — L approximation mentionnée dans le papyrus Rhind La quadrature du cercle est un problème classique de mathématiques apparaissant en géométrie. Il fait partie des trois grands problèmes de l Antiquité, avec la trisection de l angle et la… …   Wikipédia en Français

• quadrature — /kwod reuh cheuhr, choor /, n. 1. the act of squaring. 2. Math. a. the act or process of finding a square equal in area to a given surface, esp. a surface bounded by a curve. b. the act or process of finding an area or calculating an integral,… …   Universalium

• quadrature of the circle — Math. the insoluble problem of constructing, by the methods of Euclidean geometry, a square equal in area to a given circle. Also called squaring the circle. [1590 1600] * * * …   Universalium

• quadrature of the circle — noun The problem, proposed by ancient Greek geometers, of using a finite ruler and compass construction to make a square with the same area as a given circle. Syn: squaring the circle …   Wiktionary