ruled quadric
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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
doubly ruled surface — noun mathematics : a ruled surface with two systems of rulings or generators; specifically : a quadric surface … Useful english dictionary
Tutte–Coxeter graph — infobox graph name = Tutte–Coxeter graph image caption = namesake = W. T. Tutte H. S. M. Coxeter vertices = 30 edges = 45 girth = 8 chromatic number = 2 chromatic index = properties = Cubic Cage Moore graph Arc transitiveIn the mathematical field … Wikipedia
Jakob Steiner — Infobox Scientist name = box width = image width =150px caption = birth date = 18 March , 1796 birth place = Utzenstorf, Canton of Bern death date = April 1, 1863 death place = Bern residence = citizenship = Swiss nationality = ethnicity = field … Wikipedia
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
Plücker coordinates — In geometry, Plücker coordinates, introduced by Julius Plücker in the 19th century, are a way to assign six homogenous coordinates to each line in projective 3 space, P 3. Because they satisfy a quadratic constraint, they establish a one to one… … Wikipedia
Conical surface — A circular conical surface In geometry, a (general) conical surface is the unbounded surface formed by the union of all the straight lines that pass through a fixed point the apex or vertex and any point of some fixed space curve the directrix… … Wikipedia
Enriques-Kodaira classification — In mathematics, the Enriques Kodaira classification is a classification of compact complex surfaces. For complex projective surfaces it was done by Federigo Enriques, and Kunihiko Kodaira later extended it to non algebraic compact surfaces. It… … Wikipedia
Hyperboloid — Not to be confused with Hyperbolic paraboloid. Hyperboloid of one sheet … Wikipedia
Cylinder (geometry) — A right circular cylinder A cylinder is one of the most basic curvilinear geometric shapes, the surface formed by the points at a fixed distance from a given line segment, the axis of the cylinder. The solid enclosed by this surface and by two… … Wikipedia
Paraboloid — of revolution In mathematics, a paraboloid is a quadric surface of special kind. There are two kinds of paraboloids: elliptic and hyperbolic. The elliptic paraboloid is shaped like an oval cup and can have a maximum or minimum point. In a… … Wikipedia
