Abstract:
These notes are an extended proofless version of lectures given at Matscience in February 1969. This report consists of 4 parts. Preliminaries and the Two-Body problem are discussed in the first section; The preliminary lecture assumes that the Reader is familiar with basic concepts of functional analysis. The Three-body problem and the Faddeev equations are discussed in the second chapter. The third one deals with the N-body Problem, while the fourth chapter discusses about the Perturbation theory.