Departament de Matemàtica Aplicada I, Universitat Politècnica de Catalunya, Avinguda Diagonal 647, Barcelona 08028, Spain
Abstract:
Let be a formal power series ring over a field of characteristic zero and any ideal. The aim of this work is to introduce some numerical invariants of the local rings by using the theory of algebraic -modules. More precisely, we will prove that the multiplicities of the characteristic cycle of the local cohomology modules and , where is any prime ideal that contains , are invariants of .