2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55052Lectures given at the First School on Field Theory and Gravitation, Vitória, Esp\'ırito Santo, Brazil, 15-19 April, 1997.58 pages, LateX2e fileHigh Energy Physics - TheoryAlgebraic Renormalization: perturbative twisted considerations on topological Yang-Mills theory and on N=2 supersymmetric gauge theoriestext