2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/123227We study the so-called weakly Koszul modules and characterise their Koszul duals. We show that the (adjusted) associated graded module of a weakly Koszul module exactly determines the homology modules of the Koszul dual. We give an example of a quasi-Koszul module which is not weakly Koszul.20 pagesRepresentation Theory16W50, 16S37, 18E30text