robin
Joined: 26 Mar 2010, 04:39 Posts: 109

Exercise [14.32]c
I mentioned before that I expected that an indexfree approach would provide the simplest solution to this problem. I have finally managed to solve it with this approach. It is interesting in that unlike my previous solution, this one is purely algebraic and requires no covariant derivatives or Riemann tensors.
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Roberto
Joined: 03 Jun 2010, 15:18 Posts: 136

Re: Exercise [14.32]c
That's an elegant proof: not only is index free but gets the point as a straightforward consequence of another result, interesting by itself.
