2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150820Weak C* Hopf algebras can act as global symmetries in low-dimensional quantum field theories, when braid group statistics prevents group symmetries. Possibilities to construct field algebras with weak C* Hopf symmetry from a given theory of local observables are discussed.8 pages, Latex2e, with .sty-file included; report-no added, minor make-upQuantum AlgebraHigh Energy Physics - Theorytext