Name: Sergey V. Slizovskiy Date: 03/23/02-01:02:55 PM Z
Dear Developers,
Suppose I have some expression made of multy-index fields (e.g.
Lagrangian)
I want to substitute an explicit array of fields instead of one field
index
(e.g. A_i = {A_1,A_2,A_3} )
I want to get proper sums at the places where removed index was
contracted.
Are there ways to do it?
Thank you for help,
Sergey.