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Riemannian manifold  

Definición

  • In differential geometry, a Riemannian manifold or Riemannian space (M, g), so called after the German mathematician Bernhard Riemann, is a real, smooth manifold M equipped with a positive-definite inner product gp on the tangent space TpM at each point p.
    The family gp of inner products is called a Riemannian metric (or Riemannian metric tensor). Riemannian geometry is the study of Riemannian manifolds.
    (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Riemannian_manifold)

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http://data.loterre.fr/ark:/67375/PSR-S78CS2MJ-M

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