I have scanned through the code and this image has given me a cleaner picture. http://krastanov.files.wordpress.com/2012/08/painful_christoffel_symbols.png Now if I am not wrong there is still a need for the implementation of implementation of covariance as the contravariance (as I understand) is already done.(more co ordinate systems can be added to the present system)I would like to implement this and would like to know if there has been any implementation on vector spaces (especially basis , spans in general).Thanks.
On Wed, Apr 24, 2013 at 3:25 AM, Stefan Krastanov < krastanov.ste...@gmail.com> wrote: > On 23 April 2013 23:42, F. B. <franz.bona...@gmail.com> wrote: > > OK, well my intention for now is to allow using physical formulae > involving > > tensors inside SymPy. > > > > Such helper function could be very useful, but it would be easier to > discuss them when they get into a pull request. > > > I do not know enough maths to work on the diffgeom module. I think I > will go > > on with my multilinear-indexed map. It's fixed on a basis, it works just > > likes matrices in many dimensions. > > > > I started yesterday and it's almost finished, it's really simple code, > just > > to avoid writing for-loops or dealing with matrices. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to sympy+unsubscr...@googlegroups.com. > > To post to this group, send email to sympy@googlegroups.com. > > Visit this group at http://groups.google.com/group/sympy?hl=en-US. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy?hl=en-US. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
