Geodesic
On weakly symmetric spacetimes
Kragujevac Journal of Mathematics, Tome 36 (2012) no. 2, p. 299 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

In the present paper we study weakly symmetric spacetimes. The existence of such a spacetime has been proved by a non-trivial example.
Classification : 53C15 53C25
Keywords: Weakly symmetric manifold, weakly symmetric spacetime, Weyl conformal curvature tensor, perfect fluid spacetime, energy-momentum tensor, Einstein's equation. 
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Uday C; and De; Sahanous Mallick. On weakly symmetric spacetimes. Kragujevac Journal of Mathematics, Tome 36 (2012) no. 2, p. 299 . http://geodesic.mathdoc.fr/item/KJM_2012_36_2_a12/