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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


On the Cohen-Macaulay modules of graded subrings

Author: Douglas Hanes
Journal: Trans. Amer. Math. Soc. 357 (2005), 735-756
MSC (2000): Primary 13C14
Published electronically: April 27, 2004
MathSciNet review: 2095629
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Abstract: We give several characterizations for the linearity property for a maximal Cohen-Macaulay module over a local or graded ring, as well as proofs of existence in some new cases. In particular, we prove that the existence of such modules is preserved when taking Segre products, as well as when passing to Veronese subrings in low dimensions. The former result even yields new results on the existence of finitely generated maximal Cohen-Macaulay modules over non-Cohen-Macaulay rings.

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Additional Information

Douglas Hanes
Affiliation: School of Mathematics, University of Minnesota, Minneapolis, Minnesota 55455
Address at time of publication: Neuro-otology Research, Legacy Research Center, 1225 NE 2nd Avenue, Portland, Oregon 97232

PII: S 0002-9947(04)03562-7
Received by editor(s): November 11, 2001
Received by editor(s) in revised form: August 14, 2003
Published electronically: April 27, 2004
Article copyright: © Copyright 2004 American Mathematical Society

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