I've learned to represent curl, rot and Laplacian in the general form using scaling factors, Levi Civita symbol and delta. I was asked to prove some general identities in vector calculus. I was ...
Conversion of motion equation from Cartesian to Polar coordinates: Is covariant differentiation necessary?
I have earlier posted the same question here on math stackexchange but without any answer. As the question concerns tensors, I guess that I have come to the right ...
Apologies in advance if some of the questions below seem overly simple. In an introductory GR book, I find the following expression for the autoparallel of the affine connection (the upper bound of ...