2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80502The description of the Egorov hydrodynamic type systems is presented in language of conservation laws. Under extra conditions of semisimplicity and homogeneity tri-Hamiltonian structures of such systems are described. Even and odd cases are related with flat and metric of constant curvature, respectively. Some important and well-known examples like averaged by Whitham approach and dispersionless limits of vector NLS and vector LSR are investigated.15 pagesExactly Solvable and Integrable Systemstext