- quadratic surface
- мат. квадратичная поверхность
Большой англо-русский и русско-английский словарь. 2001.
quadratic surface
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Quadratic function — A quadratic function, in mathematics, is a polynomial function of the form f(x)=ax^2+bx+c ,!, where a e 0 ,!. The graph of a quadratic function is a parabola whose major axis is parallel to the y axis.The expression ax^2+bx+c in the definition of … Wikipedia
Quadratic classifier — A quadratic classifier is used in machine learning to separate measurements of two or more classes of objects or events by a quadric surface. It is a more general version of the linear classifier.The classification problemStatistical… … Wikipedia
Quadratic — In mathematics, the term quadratic describes something that pertains to squares, to the operation of squaring, to terms of the second degree, or equations or formulas that involve such terms. Quadratus is Latin for square . Mathematics Algebra… … Wikipedia
quadratic equation — Math. an equation containing a single variable of degree 2. Its general form is ax2 + bx + c = 0, where x is the variable and a, b, and c are constants (a non zero). [1680 90] * * * Algebraic equation of particular importance in optimization. A… … Universalium
Quadratic differential — In mathematics, a quadratic differential is a form on a Riemann surface that locally looks like the square of an abelian differential. It has (at least) two other interpretations that are useful in the study of Riemann surfaces: * a flat… … Wikipedia
Parametric surface — A parametric surface is a surface in the Euclidean space R3 which is defined by a parametric equation with two parameters. Parametric representation is the most general way to specify a surface. Surfaces that occur in two of the main theorems of… … Wikipedia
Ε-quadratic form — In mathematics, specifically the theory of quadratic forms, an ε quadratic form is a generalization of quadratic forms to skew symmetric settings and to * rings; epsilon = pm 1, accordingly for symmetric or skew symmetric. They are also called (… … Wikipedia
Del Pezzo surface — In mathematics, a del Pezzo surface or Fano surface is a two dimensional Fano variety, in other words a non singular projective algebraic surface with ample anticanonical divisor class. They are in some sense the opposite of surfaces of general… … Wikipedia
Subdivision surface — A subdivision surface, in the field of 3D computer graphics, is a method of representing a smooth surface via the specification of a coarser piecewise linear polygon mesh. The smooth surface can be calculated from the coarse mesh as the limit of… … Wikipedia
Doo–Sabin subdivision surface — Simple Doo Sabin sudivision surface. The figure shows the limit surface, as well as the control point wireframe mesh. In computer graphics, Doo–Sabin subdivision surface is a type of subdivision surface based on a generalization of bi quadratic… … Wikipedia
quadric surface — noun a curve or surface whose equation (in Cartesian coordinates) is of the second degree • Syn: ↑quadric • Hypernyms: ↑curve, ↑curved shape • Hyponyms: ↑hyperboloid * * * a three dimensional surface wh … Useful english dictionary
