Abstract
The object of the present paper is to study almost pseudo-conformally symmetric Ricci-recurrent manifolds. The existence of almost pseudo-conformally symmetric Ricci-recurrent manifolds has been proved by an explicit example. Some geometric properties have been studied. Among others we prove that in such a manifold the vector field ϱ corresponding to the 1-form of recurrence is irrotational and the integral curves of the vector field ϱ are geodesic. We also study some global properties of such a manifold. Finally, we study almost pseudo-conformally symmetric Ricci-recurrent spacetime. We obtain the Segre’ characteristic of such a spacetime.
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De, U.C., De, A. On almost pseudo-conformally symmetric Ricci-recurrent manifolds with applications to relativity. Czech Math J 62, 1055–1072 (2012). https://doi.org/10.1007/s10587-012-0063-0
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DOI: https://doi.org/10.1007/s10587-012-0063-0
Keywords
- pseudo-conformally symmetric manifold
- almost pseudo-conformally symmetric manifold
- Ricci-recurrent manifold
- Einstein field equations
- Segre’ characteristic