2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230581We study purely nonlocal Hamiltonian structures for systems of hydrodynamic type. In the case of a semi-Hamiltonian system, we show that such structures are related to quadratic expansions of the diagonal metrics naturally associated with the system.23ppExactly Solvable and Integrable Systemstext