2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/75790In this paper we classify all Riemann surfaces having a large abelian group of automorphisms, that is having an abelian group of automorphism of order strictly bigger then $4(g-1)$, where $g$ denotes as usual the genus of the Riemann surface.9 pages; LaTeXAlgebraic Geometry14H37; 14H30Riemann surfaces with a large abelian group of automorphismstext