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Fiber cones with almost maximal depth

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7 Citations (Scopus)

Abstract

Let A be a noetherian local ring with dimension d and I be an ideal of A. Let E = (En)(n >= 0) be a good 1-filtration of submodules of an A-module E. Let H be an ideal of A containing I and F-H(E) = circle plus(n >= 0) E-n/HEn. Assume that E is a Cohen-Macaulay module with lambda(E/IE) finite and Ann(E) = 0, and let J be a minimal reduction of I. In this paper we give conditions on lambda(E-n boolean AND JE/JE(n-1)) and lambda(HEn boolean AND JE/JHE(n-1)) so, that F-H(E), has depth of at least d - 1.
Original languageEnglish
Pages (from-to)953-963
Number of pages11
JournalCommunications in Algebra
Volume33
Issue number3
DOIs
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Cohen-Macaulay module
  • Depth
  • Fiber cones

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