2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/134438Let G be a group which acts on a commutative ring k. We exhibit an induction formula which expresses an element x_G with tr_G(x_G)=1 by elements x_P with tr_P(x_P)=1, where P varies over prime order subgroups of P.7 pagesRings and AlgebrasGroup Theory13A50An explicit formula for the action of a finite group on a commutative ringtext