Study of weakly Ricci-Symmetric spacetimes under Gray's decomposition and f(r,t) gravity

Bang-Yen CHen, Uday Chand De, Fatemah Mofarreh


In this paper we characterize weakly Ricci-symmetric spacetimes (WRS)_n endowed with the Gray’s Decomposition. We provide, several inter- esting results of (WRS)_n in Gray’s Decomposition. In addition we discuss some results based on weakly Ricci-symmetric Generalized Robertson Walker(GRW ) spacetimes. Moreover, we study (W RS)_n spacetimes the f(R,T)-gravity equation


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