Name: rolf_at_HIDDEN-E-MAIL Date: 08/15/02-01:05:21 PM Z
HiÀÐ Frederik is right that Contract and similar functions expectÐ each Lorentz index to occur at most twiceÀ i.e.À it is the Ð users responsibility to rename dummy indices.Ð You might want to use the Uncontract function if you wantÐ to automate some of this Ð In°1Ð Ð ÀÀHighEnergyPhysics