2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/134871The physics of the quantum Hall system becomes very simple when studied on a thin torus. Remarkably, however, the very rich structure still exists in this limit and there is a continuous route to the bulk system. Here we review recent progress in understanding various features of the quantum Hall system in terms of a simple one-dimensional model corresponding to the thin torus.Contribution to the book of the Les Houches school on Quantum Magnetism, 2006Mesoscale and Nanoscale PhysicsStrongly Correlated Electronstext