Possibly I have done wrong in posting this topic in this subforum.I hereby ask the moderator to close this thread.
I am to prove where is metric tensor and
Now,I was wondering if the identity
is correct---in which case the problem is solved easily.Note that the antisymmetric tensors are both co-variant.
Surely,the best way to know whether it is correct or not is to prove it...but somehow I am not getting it.If it is correct can anyone give me some hint?