2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62640Some results of B. Pasynkov and H. Torunczyk on finite-dimensional maps are improved. A generalization of a Dranishnikov-Uspenskij theorem about extensional dimension is also obtained.17 pagesGeneral TopologyGeometric Topology54F55; 55M10text