2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63166The aim of this paper is the computation of the degree and genus of all incidence scrolls in Pn. For this, we fix the dimension of a linear space which have a base space of this fixed dimension. In this way, we can obtain all the incidence scrolls with a line as directrix curve, those whose base contains a plane, and so on.Latex, 10 pages. It contains three tables. Accepted for publication in Archiv der MathematikAlgebraic GeometryPrimary, 14J26; secondary, 14H25, 14H45text