· FeynCalc

Name: Rolf Mertig Date: 03/31/05-04:35:45 PM Z

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(a GS[q].GS[l] )/.Dot -> mydot /. {a*mydot[x___, GS[l], y___] :> mydot[x,GS[J],y]} /. mydot -> Dot

This has to do with the way the Mathematica pattern matcher works. Please read the Mathematica book.

Rolf

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