Some results on the cofiniteness of local cohomology modules

SS Laleh, MY Sadeghi, MH Mostaghim - Czechoslovak mathematical …, 2012 - Springer
Let R be a commutative Noetherian ring, a an ideal of R, M an R-module and ta non-
negative integer. In this paper we show that the class of minimax modules includes the class …

A new proof of Faltings' local-global principle for the finiteness of local cohomology modules

D Asadollahi, R Naghipour - Archiv der Mathematik, 2014 - Springer
Let R be a commutative Noetherian ring, and let b ⊆ ab⊆ a be ideals of R. The goal of this
paper is to show that, for a finitely generated R-module M, if the set\rm Ass _R (H_ a^ f_ a^ b …

Some results on top local cohomology and top formal local cohomology modules

S Rezaei - Communications in Algebra, 2017 - Taylor & Francis
Let (R, 𝔪) be a complete noetherian local ring and M a finitely generated R-module of
dimension n and 𝔞 an ideal of R. At first, we find a relation between top local cohomology …

[HTML][HTML] Some splitting theorems for extension and torsion functors of local cohomology modules

E Zangoiezadeh, K Khashyarmanesh - Journal of Algebra, 2018 - Elsevier
Let R be a commutative ring with identity, a an ideal of R and M a finitely generated R-
module. In this paper, for fixed integers t and j, we study the existence of the following …

Torsion functors of generalized local cohomology modules

Y Rahimpour Nasbi, A Vahidi… - Communications in …, 2017 - Taylor & Francis
Let R be a commutative Noetherian ring, 𝔞 an ideal of R, M a finite R–module with finite
projective dimension, and X an arbitrary R–module. In this paper, for fixed integers s, t and …

Injective modules under faithfully flat ring extensions

L Christensen, F Köksal - Proceedings of the American Mathematical …, 2016 - ams.org
Let $ R $ be a commutative ring and let $ S $ be an $ R $-algebra. It is well-known that if $ N
$ is an injective $ R $-module, then $\operatorname {Hom} _R (S, N) $ is an injective $ S …

On the endomorphism rings of local cohomology modules

K Khashyarmanesh - Canadian Mathematical Bulletin, 2010 - cambridge.org
Let R be a commutative Noetherian ring and aa proper ideal of R. We show that if n:=
gradeR a, then EndR (Hn a (R))∼= Extn R (Hn a (R), R). We also prove that, for a …

Finiteness of extension functors of generalized local cohomology modules

A Vahidi, F Hassani, E Hoseinzade - Communications in Algebra, 2019 - Taylor & Francis
Let R be a commutative Noetherian ring with non-zero identity, a an ideal of R, M and X finite
R–modules, and ta non-negative integer such that H ai (M, X) is a–cofinite for all i< t. In this …

A generalization of the cofiniteness problem in local cohomology modules

J Asadollahi, K Khashyarmanesh… - Journal of the Australian …, 2003 - cambridge.org
Let R be a commutative Noetherian ring with nonzero identity and let M be a finitely
generated R-module. In this paper, we prove that if an ideal I of R is generated by a usd …

[PDF][PDF] On the cofiniteness of local cohomology modules

H Roshan-Shekalgourabi - Algebraic Structures and Their Applications, 2022 - as.yazd.ac.ir
Research Paper ON THE COFINITENESS OF LOCAL COHOMOLOGY MODULES Page 1
Algebraic Structures and Their Applications Vol. 9 No. 1 (2022) pp 81-92. Research Paper …