Integral closure of a filtration relative to a Noetherian module

Document Type : Research Paper

Authors

Department of Pure Mathematics, University of Guilan, Rasht, Iran

Abstract

 Let  $M$ be a Noetherian $R-$module.
In this paper we will introduce the integral closure of a filtration ${\mathcal{F}}=\{I_{n}\}_{n\geq 0}$  relative to the Noetherian module  $M$ and prove some related results.\\
 The integral closure of a filtration ${\mathcal{F}}=\{I_{n}\}_{n\geq 0}$  relative to $M$  is a filtration and it has an interesting relationship with  the integral closure of the filtration
 ${\widetilde{\mathcal{F}}}=\{\widetilde{I}_{n}\}_{n\geq 0}$, where $\widetilde{I}_{n}$ is the image of $I_n$  under the natural ring homomorphism  $R\rightarrow R/(Ann_R(M))$ for every $n\geq 0$.

Keywords