2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157453We offer an equivariant version of the classical monodromy zeta function of a singularity as a series with coefficients from the Grothendieck ring of finite G-sets tensored by the field of rational numbers. Main two ingredients of the definition are equivariant Lefschetz numbers and the lambda-structure on the Grothendieck ring of finite G-sets. We give an A'Campo type formula for the equivariant zeta function.Algebraic GeometryComplex Variables2S05, 32S50text