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Amir Mafi

Amir Mafi

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 14627657300
HIndex:
Faculty: Faculty of Science
Address:
Phone: 33624133

Research

Title
On the associated primes of generalized local cohomology modules
Type
JournalPaper
Keywords
Associated prime ideals_ Generalized local cohomology_ Spectral sequences; Weakly laskerian modules.
Year
2006
Journal COMMUNICATIONS IN ALGEBRA
DOI
Researchers Amir Mafi

Abstract

Let  be an ideal of a commutative Noetherian ring R with identity and let M and N be two finitely generated R-modules. Let t be a positive integer. It is shown that AssRHtMN  is contained in the union of the sets AssRExti RMHt−i  N , where 0 ≤ i ≤ t. As an immediate consequence, it follows that if either HiN  is finitely generated for all i < t or SuppRHiN  is finite for all i < t, then AssRHtMN  is finite. Also, we prove that if d = pdM and n = dimN are finite, then Hd+n  MN  is Artinian. In particular, AssRHd+n  MN  is a finite set consisting of maximal ideals.