2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53795There is a deformation of the ordinary differential calculus which leads from the continuum to a lattice (and induces a corresponding deformation of physical theories). We recall some of its features and relate it to a general framework of differential calculus on discrete sets. This framework generalizes the usual (lattice) discretization.6 pages, LaTeX, GOET-TP 98/93, contribution to the proceedings of the International Symposium ``Generalized Symmetries in Physics'', ASI Clausthal 1993High Energy Physics - Theorytext