Quite some time ago, I did some work with symbolics that led mt to try to create Christoffel symbols in Mathcad. (I can do it in Mathematica, though I am not very good with it, and I can do it in MATLAB, using MATLAB symbolics, but it is not very clean, and certainly not very readable.) I gave it several shots in M15, and have attached the results.
The pieces seem to work, but not the aggregate...should I just do it in Mathematica instead of beating myself up here? Part of the problem here seems to be that symbolics are not handled as well as in Mathematica and MATLAB, at least as far as initial declarations go. I tried simply not declaring t,r,theta,phi, and living with the undeclared complaint, but no joy there either.
~R~