"CD" == Chris Dams <Chris.Dams@mi.infn.it> writes: CD> pairs. Also not that B~mu~mu + 1 has yielded an exception as CD> long as I can remember when, for instance, asked what its free CD> indices are.
Taking all that in account I am deleting the entire "anticommuting" portion from the clifford.cpp. It looks like the performance is not seriously affected by this. CD> the metric with up-indices is the inverse of the metric with CD> down-indices, we arive at the identity CD> e~mu e~alpha e.mu = (2 - dim) * e~alpha, CD> where dim is the number of row/columns of the metric. I saw this rule in the diracgamma contraction but have doubts that it will be simple as that for generic Clifford units with metric diag_matrix(1,-1,0) for example. Best, -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk -- www: http://maths.leeds.ac.uk/~kisilv/