In https://github.com/sympy/sympy/pull/2768 contracted arguments in ``TensMul.__call__`` are not allowed. This is the simplest fix to this bug. To allow contracted arguments would be more complicated.
On Saturday, January 11, 2014 6:46:32 PM UTC+1, F. B. wrote: > > > > On Saturday, January 11, 2014 10:04:03 AM UTC+1, mario wrote: >> >> >> I think this is a bug; the Einstein summation convention is assumed, so >> if the substitution >> indices are (d1, -d1) it should give the contracted tensor. >> > > We already discussed this problem, regarding *substitute_indices( )*: > > https://github.com/sympy/sympy/pull/2467#issuecomment-24883932 > > Anyways, do you think this bug should be fixed on both *__call__( )* and > *.substitute_indices( > )* , or just on *__call__( )* ? > > -- 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. For more options, visit https://groups.google.com/groups/opt_out.
