two-sheet hyperboloid

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• Hyperboloid — Not to be confused with Hyperbolic paraboloid. Hyperboloid of one sheet …   Wikipedia

• Hyperboloid model — In geometry, the hyperboloid model, also known as the Minkowski model or the Lorentz model (after Hermann Minkowski and Hendrik Lorentz), is a model of n dimensional hyperbolic geometry in which points are represented by the points on the forward …   Wikipedia

• sheet — sheet1 sheetless, adj. sheetlike, adj. /sheet/, n. 1. a large rectangular piece of cotton, linen, or other material used as an article of bedding, commonly spread in pairs so that one is immediately above and the other immediately below the… …   Universalium

• sheet — I. noun Etymology: Middle English shete, from Old English scēte, scīete; akin to Old English scēat edge, Old High German scōz flap, skirt Date: before 12th century 1. a. a broad piece of cloth; especially bedsheet b. sail 1a(1) 2 …   New Collegiate Dictionary

• hyperboloid — hyperboloidal, adj. /huy perr beuh loyd /, n. Math. a quadric surface having a finite center and some of its plane sections hyperbolas. Equation: x2/a2 + y2/b2 z2/c2 = 1. [1720 30; HYPERBOL(A) + OID] * * * ▪ mathematics       the open surface… …   Universalium

• Hyperbolic geometry — Lines through a given point P and asymptotic to line R. A triangle immersed in a saddle shape plane (a hyperbolic paraboloid), as well as two diverging ultraparall …   Wikipedia

• Oblate spheroidal coordinates — Figure 1: Coordinate isosurfaces for a point P (shown as a black sphere) in oblate spheroidal coordinates (μ, ν, φ). The z axis is vertical, and the foci are at ±2. The red oblate spheroid (flattened sphere) corresponds to μ=1, whereas the blue… …   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

• List of surfaces — This is a list of surfaces, by Wikipedia page. See also list of curves, Riemann surface. Minimal surfaces* Costa surface * Catenoid * Riemann s surface * Saddle tower * Gyroid * Catalan surface * Enneper surface =Non orientable surfaces= *Klein… …   Wikipedia

• Ruled surface — A hyperboloid of one sheet is a doubly ruled surface: it can be generated by either of two families of straight lines. In geometry, a surface S is ruled if through every point of S there is a straight line that lies on S. The most familiar… …   Wikipedia

• Hyperbola — This article is about a geometrical curve, a conic section. For the term used in rhetoric, see Hyperbole …   Wikipedia