2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/122254A simple formula computing the multiplier ideal of a monomial ideal on an arbitrary affine toric variety is given. Variants for the multiplier module and test ideals are also treated.8 pages, to appear in Mathematische ZeitschriftAlgebraic GeometryCommutative Algebra14J17,13A35text