2024 : 11 : 22

Morteza Lotfiparsa

Academic rank: Assistant Professor
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Education: PhD.
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Research

Title
Depth of a pair of ideals on ZD-modules
Type
Presentation
Keywords
Depth, Local cohomology, Serre subcategory, ZD-Module
Year
2021
Researchers Morteza Lotfiparsa

Abstract

Let $R$ be a Noetherian ring‎, ‎$I$ and $J$ be two ideals of $R$‎, ‎and‎ ‎$S$ be a Serre subcategory‎ ‎of the category of $R$-modules satisfying the condition $C_I$‎. ‎We extend the notion of $S$-depth of $I$ on a finitely generated $R$-module $M$‎, ‎denoted by‎ ‎$S-\depth(I‎, ‎M)$‎, ‎to the class of $ZD$-modules‎. ‎Next‎, ‎as a generalization of $S-\depth(I‎, ‎M)$ and $\depth(I‎, ‎J‎, ‎M)$‎, ‎the $S-\depth$ of $(I‎, ‎J)$‎ ‎on a $ZD$-module $M$ is defined as‎ ‎$S-\depth(I‎, ‎J‎, ‎M)=\inf\{S-\depth(\frak{a}‎, ‎M)‎: ‎\frak{a}\in \tilde{\rm W}(I,J)\}$‎, ‎and some properties of this concept are investigated‎. ‎Also‎, ‎the relations between $S-\depth(I‎, ‎J‎, ‎M)$ and $H^{i}_{I,J}(M)$‎ ‎are studied‎.