2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66821In this note we introduce and investigate the concepts of dual entwining structures and dual entwined modules. This generalizes the concepts of dual Doi-Koppinen structures and dual Doi-Koppinen modules introduced (in the infinite case over rings) by the author is his dissertation.21 pagesRings and AlgebrasQuantum Algebra16W30, 18E15text