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negative curvature

См. также в других словарях:

  • negative curvature — noun : curvature of a graph in such a way that it is concave downward …   Useful english dictionary

  • Curvature — In mathematics, curvature refers to any of a number of loosely related concepts in different areas of geometry. Intuitively, curvature is the amount by which a geometric object deviates from being flat, or straight in the case of a line, but this …   Wikipedia

  • negative hydrotropism — Hydrotropism Hy*drot ro*pism, n. 1. (Bot.) A tendency towards moisture. [1913 Webster] 2. (Bot.) In a broader sense, any curvature or turning induced in certain growing plant organs under the influence of moisture. Note: When the movement is… …   The Collaborative International Dictionary of English

  • Negative Butterfly — A non parallel yield curve shift in which long and short term yields decrease by a greater degree than intermediate rates. This yield curve shift effectively humps the curve, adding to the curvature of the yield curve. For example, a negative… …   Investment dictionary

  • curvature of space — Physics, Astron. 1. (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths. 2. (in cosmology) a large scale property of the universe that has an algebraic sign that… …   Universalium

  • curvature of space — Physics, Astron. 1. (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths. 2. (in cosmology) a large scale property of the universe that has an algebraic sign that… …   Useful english dictionary

  • Sectional curvature — In Riemannian geometry, the sectional curvature is one of the ways to describe the curvature of Riemannian manifolds. The sectional curvature K(σp) depends on a two dimensional plane σp in the tangent space at p. It is the Gaussian curvature of… …   Wikipedia

  • Gaussian curvature — In differential geometry, the Gaussian curvature or Gauss curvature of a point on a surface is the product of the principal curvatures, κ 1 and κ 2, of the given point. It is an intrinsic measure of curvature, i.e., its value depends only on how… …   Wikipedia

  • Constant curvature — See also: Space form In mathematics, constant curvature in differential geometry is a concept most commonly applied to surfaces. For those the scalar curvature is a single number determining the local geometry, and its constancy has the obvious… …   Wikipedia

  • Ricci curvature — In differential geometry, the Ricci curvature tensor, named after Gregorio Ricci Curbastro, provides one way of measuring the degree to which the geometry determined by a given Riemannian metric might differ from that of ordinary Euclidean n… …   Wikipedia

  • Membrane curvature — is the geometrical measure or characterization of the curvature of membranes. The membranes can be naturally occurring or man made (synthetic). An example of naturally occurring membrane is the lipid bilayer of cells, also known as cellular… …   Wikipedia

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