2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79081We prove that the jacobian of a hyperelliptic curve y^2=f(x) has no nontrivial endomorphisms over an algebraic closure of the ground field of characteristic zero if the Galois group of the polynomial f is ``very big''.LaTeX2e, 8 pagesAlgebraic GeometryNumber Theory14H40;14K05;11G30;11G10text