2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80571We deform the Dorfman's and Sokolov's Hamiltonian operators by the quasi-Miura transformation coming from the topological field theory and investigate the deformed operators.10 pages, Contribution to the Proceedings of the Fifth International Conference " Symmetry in Nonlinear Mathematical Physics", Kyiv, Ukraine, June, 2003Exactly Solvable and Integrable Systemstext