grtensor 5d??? I want to calculate the Ricci tensor for a 5-D metric. For example , the randall sundrum metric. [tex]ds^2=dw^2+exp(-2A(w))*(-dt^2+dx^2+dy^2+dz^2)[/tex] there is any computer program to calculate ricci tensor in 5d spacetime? In 4d , using grtensor for the metric: [tex]ds^2=exp(-2A(w))*(-dt^2+dx^2+dy^2+dz^2)[/tex] but, all component are zero (figure) any suggestions?