2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76265We give a notion of a comatrix coring which embodies all former constructions and, what is more interesting, leads to the formulation of a notion of Galois coring and the statement of a Faithfully Flat Descent Theorem that generalize the previous versions.Rings and Algebrastext