2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63732We review the basics of the Lagrangian approach to field theory and recast Noether's Second Theorem formulated in her language of dependencies using a slight modernization of terminology and notation. We then present the Cattaneo-Felder sigma model and work out the Noether identities or dependencies for this model. We review the description of the Batalin-Vilkovisky formalism and show explicitly how the anti-ghosts encode the Noether identities in this example.15 pages, submitted to the Proceedings of the 2002 Winter School ``Geometry and Physics'', Srni, Czech RepublicQuantum AlgebraHigh Energy Physics - TheoryAlgebraic Topology18G10,81T70,18G55,81R10,81T40text