Some results on generalized local cohomology modules

preprint2013arXivOpen access

Abstract

Let RR be a commutative Noetherian ring with non-zero identity, $\fa$ an ideal of RR, MM a finite RR--module and XX an arbitrary RR--module. Here, we show that, in the Serre subcategories of the category of RR--modules, how the generalized local cohomology modules, the ordinary local cohomology modules and the extension modules behave similarly at the initial points. We conclude some Artinianness and cofiniteness results for $\lc^{n}_{\fa}(M, X)$, and some finiteness results for $\Supp_R(\lc^{n}_{\fa}(M, X))$ and $\Ass_R(\lc^{n}_{\fa}(M, X))$.

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