2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58793Let E be a compact set of C of positive logarithmic capacity. Let us suppose that for every polynomial $P\not=id$ we have $P^{-1}(E)\not=E$. Then for all no constant polynomials f and g such that $f^{-1}(E)=g^{-1}(E)$ we have f=g.21 pagesComplex Variablestext