2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35331Starting from generic bilinear Hamiltonians, constructed by covariant vector, bivector or tensor fields, it is possible to derive a general symplectic structure which leads to holonomic and anholonomic formulations of Hamilton equations of motion directly related to a hydrodynamic picture. This feature is gauge free and it seems a deep link common to all interactions, electromagnetism and gravity included. This scheme could lead toward a full canonical quantization.9 pages, no figure. to appear in Progress in PhysicsGeneral Relativity and Quantum Cosmologytext