Note on (conformally) semi-symmetric spacetimes
نویسندگان
چکیده
We prove that conformally semi-symmetric spacetimes are actually semisymmetric. We also present a complete refined classification of the semi-symmetric spacetimes. PACS numbers: 04.20.Cv, 02.40.Ky, 04.20.Jb
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تاریخ انتشار 2009