2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62769An introduction to the applications of algebraic surgery to the structure theory of high-dimensional topological manifolds.20 pages. Notes of lecture given at the Summer School on High-dimensional Manifold Topology, ICTP Trieste, May-June 2001. To appear in Vol. 1 of the ProceedingsAlgebraic TopologyGeometric Topology57R67;57P10;57N65The structure set of an arbitrary space, the algebraic surgery exact sequence and the total surgery obstructiontext