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## Main Question or Discussion Point

Hi all,

The trace of two SU(3) generators can be calculated by:

## T_{ij} T_{ji} = \frac{1}{2} ##, now how to calculate the trace of SU(3) generators:

## T_{il} T_{lk} T_{kj} T_{ji} ## ?

The trace of two SU(3) generators can be calculated by:

## T_{ij} T_{ji} = \frac{1}{2} ##, now how to calculate the trace of SU(3) generators:

## T_{il} T_{lk} T_{kj} T_{ji} ## ?