Can indices be moved?

Question

Hi,

i want to lower all indices like

A_{m p} B^{p n} -> A_{m p} B_{p n} 

is there a way to make all indices down?

thanks

Answer 1

Declare your index positions free and use lower_free_indices:

{m,n,p}::Indices(position=free);
ex:=A_{m p} B^{p n};
lower_free_indices(ex);

The word 'free' here refers to the index type position=free, not to the fact that they are un-contracted.