| 1 | initial version |
Have you tried SageManifolds? sagemanifolds.obspm.fr
I do tensor calculus with it and I think it's good. Then as Juanlu001 already told you try to use diff and post your code.
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.