Mantica, Carlo AlbertoShenawy, Sameh2019-11-232019-11-232017Cited References in Web of Science Core Collection: 320219-8878https://doi.org/10.1142/S0219887817501663https://www.worldscientific.com/doi/abs/10.1142/S0219887817501663Accession Number: WOS:000413442500017In this paper, it is proved that the fiber manifold M-2 of a warped product manifold M = M-1 x(f) M-2 inherits the Einstein-like class type of M whereas the base manifold does under some conditions. Some related results are considered.enUniversity of ROBERTSON-WALKER SPACETIMESCOVARIANT DERIVATIVESSYMMETRIC TENSORSCURVATUREGEOMETRYMETRICSGeneralized Robertson-Walker spacetimeArticlehttps://doi.org/10.1142/S0219887817501663