SUNFDeltaContract[exp]
substitutes for all SUNFDelta
in exp SUNFDeltaContract
, contracts the fundamental indices and resubstitutes SUNFDelta
.SUNFDeltaContract[i, j]
is the Kronecker-delta for in the fundamental representation with contraction properties. It wraps the head SUNFIndex
around its arguments.
Overview, SUNFDelta, SUNFIndex.
[SUNFIndex[a], SUNFIndex[b]]^2
SUNFDelta
[%] SUNFDeltaContract