In mathematical physics, the Ehlers group, named after
Jürgen Ehlers, is a finite-dimensional transformation group of stationary
vacuum spacetimes which maps solutions of
Einstein's field equations to other solutions. It has since found a number of applications, from use as a tool in the discovery of previously unknown solutions to a proof that solutions in the stationary axisymmetric case form an
integrable system.
[The original articles are and ; for the applications, .]
References
General relativity
Group theory
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