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arxiv: 1107.5079 · v4 · pith:DQ5QETY5new · submitted 2011-07-25 · 🧮 math.AC · math.AG

Some results on generalized local cohomology modules

classification 🧮 math.AC math.AG
keywords modulescohomologylocalresultssomegeneralizedmodulearbitrary
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Let $R$ be a commutative Noetherian ring with non-zero identity, $\fa$ an ideal of $R$, $M$ a finite $R$--module and $X$ an arbitrary $R$--module. Here, we show that, in the Serre subcategories of the category of $R$--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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