<P> G μ ν ≡ R μ ν − 1 2 R g μ ν = 8 π G c 4 T μ ν (\ displaystyle G_ (\ mu \ nu) \ equiv R_ (\ mu \ nu) - (\ textstyle 1 \ over 2) R \, g_ (\ mu \ nu) = (8 \ pi G \ over c ^ (4)) T_ (\ mu \ nu) \,) </P> <P> On the left - hand side is the Einstein tensor, a specific divergence - free combination of the Ricci tensor R μ ν (\ displaystyle R_ (\ mu \ nu)) and the metric . Where G μ ν (\ displaystyle G_ (\ mu \ nu)) is symmetric . In particular, </P> <Dl> <Dd> R = g μ ν R μ ν (\ displaystyle R = g ^ (\ mu \ nu) R_ (\ mu \ nu) \,) </Dd> </Dl> <Dd> R = g μ ν R μ ν (\ displaystyle R = g ^ (\ mu \ nu) R_ (\ mu \ nu) \,) </Dd>

Explain the consequences of the postulates of general relativity