2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79567We introduce the notion of a cellular system in order to deal with quasi-hereditary algebras. We shall prove that a necessary and sufficient condition for an algebra to be quasi-hereditary is the existence of a full divisible cellular system. As a further application, we prove that the existence of a full local cellular system is a sufficient condition for a standardly stratified algebra.15 pagesRepresentation TheoryQuantum AlgebraRings and Algebras16E10, 20C20, 20C30, 20G05, 16S80text