Module diagram_symmetry

Find symmetries between amplitudes by comparing diagram tags for all the diagrams in the process. Identical diagram tags correspond to different external particle permutations of the same diagram.

Return list of positive number corresponding to number of symmetric diagrams and negative numbers corresponding to the equivalent diagram (for e+e->3a, get [6, -1, -1, -1, -1, -1]), list of the corresponding permutations needed, and list of all permutations of identical particles.

Find symmetries between amplitudes by comparing the squared amplitudes for all permutations of identical particles.

Return list of positive number corresponding to number of symmetric diagrams and negative numbers corresponding to the equivalent diagram (for e+e->3a, get [6, -1, -1, -1, -1, -1]), list of the corresponding permutations needed, and list of all permutations of identical particles. max_time gives a cutoff time for finding symmetries (in s).

Find symmetries between the configs in the subprocess group. For each config, find all matrix elements with maximum identical particle factor. Then take minimal set of these matrix elements, and determine symmetries based on these.

For each config, find all matrix elements with maximum identical particle factor. Then take minimal set of these matrix elements.