2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77092In the paper we compute the ring strucure on the rational cohomology of a complex subspace complement. For that we construct a small differential graded subalgebra of the De Concini-Procesi wonderful model that is quasi isomorphic to this model. For two classes of arrangements explicit presentation of the ring is given.30 pagesCombinatoricsAlgebraic Topology52B30; 52B40text