2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74187We introduce pretty clean modules, extending the notion of clean modules by Dress, and show that pretty clean modules are sequentially Cohen-Macaulay. We also extend a theorem of Dress on shellable simplicial complexes to multicomplexes.Commutative Algebra13C13, 13C14, 05E99, 16W70Finite Filtrations of Modules and Shellable Multicomplexestext