2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55076In this paper, for massive fields of spins 2 and 3 with non-canonical Lagrangians, we build Hamiltonians and full systems of constraints and show that the use of derivatives in a redefinition of fields can give rise to a change of number of physical degrees of freedom.13 pages, Latex, no figuresHigh Energy Physics - Theorytext