# Spacetime Ehlers group: transformation law for the Weyl tensor

@article{Mars2001SpacetimeEG, title={Spacetime Ehlers group: transformation law for the Weyl tensor}, author={Marc Mars}, journal={Classical and Quantum Gravity}, year={2001}, volume={18}, pages={719-738} }

The spacetime Ehlers group, which is a symmetry of the Einstein vacuum field equations for strictly stationary spacetimes, is defined and analysed in a purely spacetime context (without invoking the projection formalism). In this setting, the Ehlers group finds its natural description within an infinite-dimensional group of transformations that maps Lorentz metrics into Lorentz metrics and which may be of independent interest. The Ehlers group is shown to be well defined independently of the…

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