•Check of symmetry

ampfinalren - (ampfinalren /. {MandelstamS -> MandelstamT, MandelstamT -> MandelstamS, i1 -> i3, i3 -> i1}) // Simplify

0

ampfinalren - (ampfinalren /. {MandelstamS -> MandelstamU, MandelstamU -> MandelstamS, i1 -> i4, i4 -> i1}) // Simplify

0

ampfinalren - (ampfinalren /. {MandelstamT -> MandelstamU, MandelstamU -> MandelstamT, i1 -> i2, i2 -> i1}) // Simplify

0

Converted by Mathematica  (July 10, 2003)