You are given the metric of a 4-dimensional Einstein universe in terms of spherical polar coordinates r, 0, ø, -dt2e20(...
You are given that a 4-dimensional pseudo-Riemannian space-time has the interval ds2dudvf (u) dx2 g?(u) dy*, (u, v, x, y) in terms of the coordinates x^ = (i) Use the standard variational principle 2 ds dt = 0 dt ti to find the r-equation governing the geodesic, with parameter t, between given points t and t2 (ii) Deduce from the x-geodesic equation obtained in (i) that f' T.. T. =. ur f where a prime denotes differentiation with respect to...