Construction of energy-momentum tensor of gravitation
  We construct the gravitational energy-momentum tensor in general relativity
through the Noether theorem. In particular, we explicitly demonstrate that the
constructed quantity can vary as a tensor under the general coordinate
transformation. Furthermore, we verify that the energy-momentum conservation is
satisfied because one of the two indices of the energy-momentum tensor should
be in the local Lorentz frame. It is also shown that the gravitational energy
and the matter one cancel out in certain space-times.
