2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/145201Let k be an algebraically closed field of characteristic 0. We prove that any division algebra over k(x,y) whose ramification locus lies on a quartic curve is cyclic.9 pagesAlgebraic GeometryRings and Algebras16K20;16K50;14F22Division algebras that ramify only on a plane quartic curvetext