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Uniform annihilation of local cohomology and of Koszul homology

Published online by Cambridge University Press:  24 October 2008

K. Raghavan
Affiliation:
Purdue University, West Lafayette, IN 47907, U.S.A.

Extract

Let R be a ring (all rings considered here are commutative with identity and Noetherian), M a finitely generated R-module, and I an ideal of R. The jth local cohomology module of M with support in I is defined by

In this paper, we prove a uniform version of a theorem of Brodmann about annihilation of local cohomology modules. As a corollary of this, we deduce a generalization of a theorem of Hochster and Huneke about uniform annihilation of Koszul homology.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1992

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References

REFERENCES

[1]Brodmann, M.. Einige Ergebnisse aus der lokalen Kohomologietheorie und ihre Anwendung. Osnabrücker Schriften zur Math. no. 5 (1983).Google Scholar
[2[Dieudonné, J. and Grothendieck, A.. Éléments de géometrie algébrique. Inst. Hautes Études Sci. Publ. Math. 24 (1965).Google Scholar
[3]Faltings, G.. Über die Annulatoren lokaler Kohomologiegruppen. Arch. Math. (Basel) 30 (1978), 473476.CrossRefGoogle Scholar
[4]Faltings, G.. Der Endlichkeitssatz der lokalen Kohomologie. Math. Ann. 255 (1981), 4556.CrossRefGoogle Scholar
[5]Faltings, G.. Über lokale Kohomologiegruppen hoher Ordnung. J. Reine Angew. Math. 313 (1980), 4351.Google Scholar
[6]Grothendieck, A.. Local Cohomology (notes by R. Hartshorne). Lecture Notes in Math. vol 41 (Springer-Verlag, 1967).Google Scholar
[7]Hartshorne, R.. Cohomological dimension of algebraic varieties. Ann. of Math. (2) 88 (1968), 403450.CrossRefGoogle Scholar
[8]Hochster, M. and Huneke, C.. Tight closure, invariant theory, and the Briançon–Skoda theorem. J. Amer. Math. Soc. 3 (1990), 31116.Google Scholar
[9]Hochster, M. and Huneke, C.. Infinite integral extensions and big Cohen–Macaulay algebras Ann. of Math. (2) 135 (1992), 5389.CrossRefGoogle Scholar
[10]Huneke, C.. Uniform bounds in Noetherian rings. Invent. Math. 107 (1992), 203223.CrossRefGoogle Scholar
[11]Huneke, C. and Lyubeznik, G.. On the vanishing of local cohomology modules. Invent. Math. 102 (1990), 7393.CrossRefGoogle Scholar
[12]Huneke, C. and Sharp, R.. Bass numbers of local cohomology modules of a regular local ring of positive characteristic. Trans. Amer. Math. Soc., to appear.Google Scholar
[13]Raghavan, K.. Uniform annihilation of local cohomology and powers of ideals generated by quadratic sequences. Ph.D. Thesis, Purdue University (1991).Google Scholar