Riemann compatible tensors

• Autorzy: Carlo Alberto Mantica , Luca Guido Molinari
• Języki publikacji: EN

Abstrakty

EN

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 with Riemann compatible tensors, in particular those generated by geodesic mappings. Compatibility is extended to generalized curvature tensors, with an application to Weyl's tensor and general relativity.

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Colloquium Mathematicum
• Rocznik: 2012
• Tom: 128
• Numer: 2
• Strony: 197-210

Daty

wydano

2012

Twórcy

autor

Carlo Alberto Mantica

• I.I.S. Lagrange, Via L. Modignani 65, 20161, Milano, Italy

autor

Luca Guido Molinari

• Physics Department, Università degli Studi di Milano
• I.N.F.N. sezione di Milano, Via Celoria 16, 20133 Milano, Italy

Identyfikatory

DOI

10.4064/cm128-2-5