Cofiniteness and coassociated primes of local cohomology modules

• Autores: Moharram Aghapournahr, Leif Melkersson
• Localización: Mathematica scandinavica, ISSN 0025-5521, Vol. 105, Nº 2, 2009, págs. 161-170
• Idioma: inglés
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• Resumen

  • Let R be a noetherian ring, a an ideal of R such that dimR/a=1 and M a finite R-module. We will study cofiniteness and some other properties of the local cohomology modules Hia(M). For an arbitrary ideal a and an R-module M (not necessarily finite), we will characterize a-cofinite artinian local cohomology modules. Certain sets of coassociated primes of top local cohomology modules over local rings are characterized.