Mathematische Nachrichten · 1994 · 16 citations · 4 references
Natural SciencesMathematicsPhysicsGeometryGravitationRelativityCurved SpacetimeDifferential GeometryGeneral RelativityMetric GeometryRiemannian GeometrySpacetime GeometryCovariant DerivativesCurvatureCurvature TensorsDifferential Geometry FormulationLevi-civita ConnectionMetric TensorsRiemannian MetricScalar Curvature
Abstract On an n ‐dimensional vector space, equipped with a scalar product, we prescribe (0, 4) ‐, (0, 5)‐, … type tensors R (0) , R (1) , …, satisfying the well‐known conditions for a curvature tensor and its derivatives and furthermore certain inequalities for the absolute values of the components of R (k) . Then there is an analytic Riemannian metric g on an open ball of the Cartesian space R n [ u 1 , …, u n ] for which u 1 , …, u n are normal coordinates and (▽ (k) R ) 0 = R (k) ( k = 0, 1, 2, …) hold under an identification of the tangent space T 0 R n at the origin with the vector space; ▽ (k) R denote the curvature tensor and its covariant derivatives with respect to the Levi‐Civita connection ▽ of g, respectively.
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The volume of a small geodesic ball of a Riemannian manifold.
Alfred Gray · The Michigan Mathematical Journal · 1974 · 161 citations
Natural Sciences, Anatomy, Geometry +10
Interaction of tubes and spheres
Lieven Vanhecke, T. J. Willmore · Mathematische Annalen · 1983 · 53 citations