2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17630We report the consequences of a new interaction symmetry that protects the renormalization of the electron gas in low dimensions in general, and in the quantum Hall regime in particular. We introduce a generalized Thouless' criterion for localization to include the effects of the Coulomb interaction and establish the quantization of the Hall conductance as well as the theory of massless edge bosons.4 pages, no figuresMesoscale and Nanoscale PhysicsDisordered Systems and Neural Networkstext