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Reduction of partially self-similar space-times to self-similar ones in general relativity. (English) Zbl 1098.83555
Summary: The definition of partially self-similar space-times previously introduced by Tomita is clarified and it is shown that compatibility with the Einstein equations reduces this class of space-times to the spatially self-similar case.

MSC:
83C40 Gravitational energy and conservation laws; groups of motions
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