2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/198733Various aspects of recent works on affine quantum group symmetry of integrable 2d quantum field theory are reviewed and further clarified. A geometrical meaning is given to the quantum double, and other properties of quantum groups. Multiplicative presentations of the Yangian double are analyzed.43 pagesHigh Energy Physics - Theorytext