FeynCalc manual (development version)

SUNN

SUNN denotes the number of colors. SUNSimplify[SUNDelta[a, a]] yields n_c^2 -1.

See also

Overview, SUNSimplify, SUNIndex, CA, CF.

Examples

SUNSimplify[SUNDelta[SUNIndex[a], SUNIndex[a]], SUNNToCACF -> False]

N^2-1