2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53386Recent work on a free field realization of the Hamiltonian structures of the classical KP hierarchy and of its flows is reviewed. It is shown that it corresponds to a reduction of KP to the NLS system. (Talk given by D.A.D. at the NSERC-CAP Workshop on Quantum Groups, Integrable Models and Statistical Systems, Kingston, Canada July 13-17 1992.)8 pages with harvmac, IASSNS-HEP-92/66, LAVAL PHY-26-92High Energy Physics - Theorytext