2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58683In "On the homotopy theory of arrangements," published in 1986, the authors gave a comprehensive survey of the subject. This article updates and continues the earlier article, noting some key open problems.33 pages, 6 figuresCombinatoricsAlgebraic GeometryAlgebraic TopologyGeometric Topology57N65 primary; 52B30, 05B35, 14F35, 20F36, 20F55 (secondary)text