Name: Rolf Mertig (email_not_shown)
Date: 06/15/12-12:24:19 AM Z


There is no bug here I think.
If you set

SetOptions[SUNSimplify,SUNNToCACF->False]

you get then (switchin on InputForm with FI; ) :

In[14]:= FI; SUNDelta[i,i]//SUNSimplify

Out[14]= -1 + SUNN^2

(* as it should be *)

In[15]:= ?SUNN
SUNN denotes the number of colors.
Trick[SUNDelta[a, a]] yields (SUNN^2 -1).



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