Quadric (projective geometry) — In projective geometry a quadric is the set of points of a projective space where a certain quadratic form on the homogeneous coordinates becomes zero. It may also be defined as the set of all points that lie on their dual hyperplanes, under some … Wikipedia
quadratic form — kvadratinis pavidalas statusas T sritis fizika atitikmenys: angl. quadratic form; quadric form vok. quadratische Form, f rus. квадратичная форма, f pranc. forme quadratique, f … Fizikos terminų žodynas
quadratische Form — kvadratinis pavidalas statusas T sritis fizika atitikmenys: angl. quadratic form; quadric form vok. quadratische Form, f rus. квадратичная форма, f pranc. forme quadratique, f … Fizikos terminų žodynas
Quadratic form — In mathematics, a quadratic form is a homogeneous polynomial of degree two in a number of variables. For example, is a quadratic form in the variables x and y. Quadratic forms occupy a central place in various branches of mathematics, including… … Wikipedia
Lie sphere geometry — is a geometrical theory of planar or spatial geometry in which the fundamental concept is the circle or sphere. It was introduced by Sophus Lie in the nineteenth century. [The definitive modern textbook on Lie sphere geometry is Harvnb|Cecil|1992 … Wikipedia
forme quadratique — kvadratinis pavidalas statusas T sritis fizika atitikmenys: angl. quadratic form; quadric form vok. quadratische Form, f rus. квадратичная форма, f pranc. forme quadratique, f … Fizikos terminų žodynas
kvadratinis pavidalas — statusas T sritis fizika atitikmenys: angl. quadratic form; quadric form vok. quadratische Form, f rus. квадратичная форма, f pranc. forme quadratique, f … Fizikos terminų žodynas
квадратичная форма — kvadratinis pavidalas statusas T sritis fizika atitikmenys: angl. quadratic form; quadric form vok. quadratische Form, f rus. квадратичная форма, f pranc. forme quadratique, f … Fizikos terminų žodynas
Differential geometry of surfaces — Carl Friedrich Gauss in 1828 In mathematics, the differential geometry of surfaces deals with smooth surfaces with various additional structures, most often, a Riemannian metric. Surfaces have been extensively studied from various perspectives:… … Wikipedia
Conformal geometry — In mathematics, conformal geometry is the study of the set of angle preserving (conformal) transformations on a space. In two real dimensions, conformal geometry is precisely the geometry of Riemann surfaces. In more than two dimensions,… … Wikipedia