Name: Sergey V. Slizovskiy (email_not_shown)
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,

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