Conditions for the algebraic determination of the metric from the curvature.
Atkins, Richard (2009)
The New York Journal of Mathematics [electronic only]
Similarity:
Atkins, Richard (2009)
The New York Journal of Mathematics [electronic only]
Similarity:
S. Topa (1972)
Annales Polonici Mathematici
Similarity:
L. Bieszk, E. Stasiak (1972)
Annales Polonici Mathematici
Similarity:
Carlo Alberto Mantica, Luca Guido Molinari (2012)
Colloquium Mathematicae
Similarity:
Derdziński and Shen's theorem on the restrictions on the Riemann tensor imposed by existence of a Codazzi tensor holds more generally when a Riemann compatible tensor exists. Several properties are shown to remain valid in this broader setting. Riemann compatibility is equivalent to the Bianchi identity for a new "Codazzi deviation tensor", with a geometric significance. The above general properties are studied, with their implications on Pontryagin forms. Examples are given of manifolds...
Tripathi, Mukut Mani, Kim, Jeong-Sik (2004)
Balkan Journal of Geometry and its Applications (BJGA)
Similarity:
Carlo Alberto Mantica, Luca Guido Molinari (2012)
Colloquium Mathematicae
Similarity:
We extend a remarkable theorem of Derdziński and Shen, on the restrictions imposed on the Riemann tensor by the existence of a nontrivial Codazzi tensor. We show that the Codazzi equation can be replaced by a more general algebraic condition. The resulting extension applies both to the Riemann tensor and to generalized curvature tensors.
Nadj, Djerdji F. (1981)
Publications de l'Institut Mathématique. Nouvelle Série
Similarity:
M. Lorens (1970)
Annales Polonici Mathematici
Similarity:
Tapia, Victor (2009)
Revista Colombiana de Matemáticas
Similarity:
Carlo Alberto Mantica, Luca Guido Molinari (2011)
Colloquium Mathematicae
Similarity:
A second-order differential identity for the Riemann tensor is obtained on a manifold with a symmetric connection. Several old and some new differential identities for the Riemann and Ricci tensors are derived from it. Applications to manifolds with recurrent or symmetric structures are discussed. The new structure of K-recurrency naturally emerges from an invariance property of an old identity due to Lovelock.
Stojković, Neda (1983)
Publications de l'Institut Mathématique. Nouvelle Série
Similarity:
Sergey Stepanov, Irina Tsyganok, Josef Mikeš (2011)
Kragujevac Journal of Mathematics
Similarity: