2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/153848We survey some topics involving the Whitham equations, concentrating on the role of the Baker Akhiezer function in averaging. Some connections to symplectic geometry and Seiberg-Witten theory are indicated.Latex 40 pagesExactly Solvable and Integrable Systemstext