Ultraviolet and infrared singularity structure of generic Feynman amplitudes

The generic Feynman amplitude for a graph G, defined in an earlier paper by an integral over Feynman parameters, is itself a function of regularizing parameters, lambda, ν. The desingularization of the integral which is needed to exhibit the meromorphic structure in these variables is worked out. All ultraviolet and infrared singularities are determined, and these are shown to correspond to certain types of sub and quotient graphs of G, respectively