2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31185We address a general representation problem for belief change, and describe two interrelated representations for iterative non-prioritized change: a logical representation in terms of persistent epistemic states, and a constructive representation in terms of flocks of bases.7 pages,Proceedings NMR'02, references addedArtificial IntelligenceI.2.3text