2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/100468The paper is withdrawn by the author due to a recently discovered flaw in a basic proof.The paper is withdrawn by the author due to a recently *) discovered flaw in a basic proof. *) 5 Oct. 06Materials ScienceOn the dynamics of spin systems with a general ground statetext