quadric cone

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• Quadric — In mathematics, a quadric, or quadric surface, is any D dimensional hypersurface defined as the locus of zeros of a quadratic polynomial. In coordinates {x 0, x 1, x 2, ldots, x D}, the general quadric is defined by the algebraic equation… …   Wikipedia

• Cone (geometry) — Not to be confused with the conical surface.. A right circular cone and an oblique circular cone A cone is an n dimensional geometric shape that tapers smoothly from a base (usually flat and circular) to a point called the apex or vertex.… …   Wikipedia

• quadric — The three dimensional surface represented by a general second degree equation in three variables. By a suitable choice of co ordinates sucha an equation can be reduced to one of the following standard equations If all of the ± are + then it… …   Dictionary of automotive terms

• central quadric — noun : a second degree surface possessing a center about which there is a symmetrical figure (as an ellipsoid, 1 sheeted or 2 sheeted hyperboloid, or cone) …   Useful english dictionary

• Quadrique — En mathématiques, et plus précisément en géométrie euclidienne, une quadrique, ou surface quadratique, est une surface de l espace euclidien de dimension 3, lieu des points vérifiant une équation cartésienne de degré 2 Ax2 + By2 + Cz2 + 2Dyz +… …   Wikipédia en Français

• Cuádrica — Una cuádrica es una superficie determinada por una ecuación de la forma: donde P es un polinomio de segundo grado en las coordenadas . Cuando no se precisa, es una superficie del espacio tridimensional real usual, en un sistema de coordenadas… …   Wikipedia Español

• List of mathematical shapes — Following is a list of some mathematically well defined shapes. See also list of polygons, polyhedra and polytopes and list of geometric shapes.0D with no surface*point1D with 0D surface*interval *line2D with 1D surface*Bézier curve: ( As + Bt )… …   Wikipedia

• Resolution of singularities — Strong desingularization of Observe that the resolution does not stop after the first blowing up, when the strict transform is smooth, but when it is simple normal crossings with the exceptional divisors. In algebraic geometry, the problem of… …   Wikipedia

• quadricone — /kwodˈri kōn/ noun A quadric cone, or cone having a conic as base • • • Main Entry: ↑quadri …   Useful english dictionary

• Rational singularity — In mathematics, more particularly in the field of algebraic geometry, a scheme X has rational singularities, if it is normal, of finite type over a field of characteristic zero, and there exists a proper birational map :f : Y ightarrow X from a… …   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