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arXiv · 1101.4157

Extended Derdzinski-Shen theorem for the Riemann tensor

Carlo Alberto Mantica·Luca Guido Molinari
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Abstract

We extend a classical result by Derdzinski and Shen, on the restrictions imposed on the Riemann tensor by the existence of a nontrivial Codazzi tensor. The new conditions of the theorem include Codazzi tensors (i.e. closed 1-forms) as well as tensors with gauged Codazzi condition (i.e. "recurrent 1-forms"), typical of some well known differential structures.

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Carlo Alberto Mantica, Luca Guido Molinari. 2011-01-21. Extended Derdzinski-Shen theorem for the Riemann tensor. https://doi.org/10.4064/cm128-1-1

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