Elsevier

Physics Letters A

Volume 60, Issue 5, 21 March 1977, Pages 397-398
Physics Letters A

Special exact solutions of Einstein's equations — A theorem and some observations

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Abstract

It is shown that a certain property of many special exact cosmological solutions to Einstein's field equations holds in more general situations, and is independent of whether or not the space-time is spatially homogeneous. Some comments are made on this.

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