2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/158722Let A be a tame quasi-tilted algebra and d the dimension vector of an indecomposable A-module. In the paper we prove that each irreducible component of the variety of A-modules of dimension vector d is regular in codimension one.Representation TheoryAlgebraic Geometry16G20, 14B05, 14L30On regularity in codimension one of irreducible components of module varietiestext