2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223163An overview of the perturbative expansion of the Chern--Simons path integral is given. The main goal is to describe how trivalent graphs appear: as they already occur in the perturbative expansion of an analogous finite-dimensional integral, we discuss this case in detail.This is the version published by Geometry & Topology Monographs on 22 April 2006Geometric TopologyQuantum Algebra81T18, 57M27, 58J28, 81T13text