Combinatorics and renormalization in quantum field theory Book

This volume is based upon work done by the author and his collaborators over a period of approximately twenty years and is dedicated to some selected topics of quantum field theory, which have proved of increasing importance with the passing of time.There are three parts: Combinatoric Methods Equations for Green's Functions and Perturbative Expansions Regularization, Renormalization, and Mass Equations This work will be useful to anyone interested in learning or using quantum field theory, many-body physics and, as well, to many applied mathematicians, because it introduces a number of combinatoric and analytic tools which drastically simplify, and at times bypass, treatments which customarily take up most of the bulk of the standard texts.