2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/57299Links of factorization theory, supersymmetry and Darboux transformations as isospectral deformations are considered in the context of quantum theory. The infinite chain equations for factorizing operators for a spectral problem are derived. A closure of the chain defines a symmetry of the system. Examples of matrix-differential operators of Pauli and Dirac type are analyzed.12 pagesMathematical PhysicsDynamical Systemstext