On Friday, January 10, 2014 11:26:38 PM UTC+1, F. B. wrote:
> > This is a bug, d0 and -d0 have not been recognized as dummy indices and > are not contracted. I think I'll have a look tomorrow. > > I correct myself, this is not a bug. When you perform *R = Ric(d0,-d0)* , you are substituting the original indices with new ones. The tensor module does not perform transform contracted indices to dummy indices after substitutions, and this behavior was intended to be as such. You have to call the contraction manually. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
