Geodesic
On weakly b symmetric pseudo Riemannian manifolds and its applications
Filomat, Tome 35 (2021) no. 3, p. 895

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DOI

The object of the present paper is to study weakly B symmetric manifolds (WBS) n. At first some geometric properties of (WBS) n (n > 2) have been studied. Finally, we consider (WBS) 4 spacetimes. They turn out to be both perfect and imperfect fluids Robertson-Walker space-times : an equation of state is provided in the first case, and in the second the nature of the bulk viscosity pressure is pointed out. Also, we construct an example of a (WBS) 4
DOI : 10.2298/FIL2103895M
Classification : 53C25, 53C35, 83C15
Keywords: weakly symmetric manifolds, pseudo B symmetric manifolds, weakly B symmetric manifolds, concircular and torse- forming vector field, generalized Robertson-Walker space-times, perfect fluids, equation of state, imperfect fluids 
Carlo Alberto Mantica; Uday C; and De; Young Jin Suh. On weakly b symmetric pseudo Riemannian manifolds and its applications. Filomat, Tome 35 (2021) no. 3, p. 895 . doi: 10.2298/FIL2103895M
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     author = {Carlo Alberto Mantica and Uday C and and De and Young Jin Suh},
     title = {On weakly b symmetric pseudo {Riemannian} manifolds and its applications},
     journal = {Filomat},
     pages = {895 },
     year = {2021},
     volume = {35},
     number = {3},
     doi = {10.2298/FIL2103895M},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2103895M/}
}
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