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  2. Hyperbola - Wikipedia

    en.wikipedia.org/wiki/Hyperbola

    Many other mathematical objects have their origin in the hyperbola, such as hyperbolic paraboloids (saddle surfaces), hyperboloids ("wastebaskets"), hyperbolic geometry (Lobachevsky's celebrated non-Euclidean geometry), hyperbolic functions (sinh, cosh, tanh, etc.), and gyrovector spaces (a geometry proposed for use in both relativity and ...

  3. Hyperbolic functions - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_functions

    In mathematics, hyperbolic functions are analogues of the ordinary trigonometric functions, but defined using the hyperbola rather than the circle.Just as the points (cos t, sin t) form a circle with a unit radius, the points (cosh t, sinh t) form the right half of the unit hyperbola.

  4. Paraboloid - Wikipedia

    en.wikipedia.org/wiki/Paraboloid

    A hyperbolic paraboloid with lines contained in it Pringles fried snacks are in the shape of a hyperbolic paraboloid. The hyperbolic paraboloid is a doubly ruled surface: it contains two families of mutually skew lines. The lines in each family are parallel to a common plane, but not to each other. Hence the hyperbolic paraboloid is a conoid.

  5. Constructions in hyperbolic geometry - Wikipedia

    en.wikipedia.org/wiki/Constructions_in...

    Hyperbolic geometry is a non-Euclidean geometry where the first four axioms of Euclidean geometry are kept but the fifth axiom, the parallel postulate, is changed.The fifth axiom of hyperbolic geometry says that given a line L and a point P not on that line, there are at least two lines passing through P that are parallel to L. [1]

  6. Saddle roof - Wikipedia

    en.wikipedia.org/wiki/Saddle_roof

    The hyperbolic paraboloid is a doubly ruled surface and thus can be used to construct a saddle roof from straight beams.. A saddle roof is a roof form which follows a convex curve about one axis and a concave curve about the other.

  7. List of hyperboloid structures - Wikipedia

    en.wikipedia.org/wiki/List_of_hyperboloid_structures

    Hyperbolic paraboloid saddle roof on train station Church Army Chapel, Blackheath: 1963 Blackheath, south east London United Kingdom: Hyperbolic paraboloid saddle roof on church E.T. Spashett: Kobe Port Tower: 1963 Kōbe Japan: Hyperboloid observation tower 108 m (354 ft) Nikken Sekkei Company: Saint Louis Science Center's James S. McDonnell ...

  8. Hyperbolic geometry - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_geometry

    The hyperbolic plane is a plane where every point is a saddle point. Hyperbolic plane geometry is also the geometry of pseudospherical surfaces, surfaces with a constant negative Gaussian curvature. Saddle surfaces have negative Gaussian curvature in at least some regions, where they locally resemble the hyperbolic plane.

  9. Hyperbolic space - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_space

    Most hyperbolic surfaces have a non-trivial fundamental group π 1 = Γ; the groups that arise this way are known as Fuchsian groups. The quotient space H 2 ‍ / ‍ Γ of the upper half-plane modulo the fundamental group is known as the Fuchsian model of the hyperbolic surface. The Poincaré half plane is also hyperbolic, but is simply ...