2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147641We discuss how the canonical commutation relations must be modified in order to make appropriate numerical models of quantum systems. The C*-algebras associated with the discretized CCRs are the non-commutative spheres of Bratteli, Elliott, Evans and Kishimoto.14 pages, AMSTeX 2.1Functional AnalysisOperator Algebrastext