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Liaison of varieties of small dimension and deficiency modules

Marc Chardin
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Abstract

This article studies the behaviour under liaison of the deficiency modules of schemes that are not assumed to be Cohen-Macaulay. Our study uses in particular a generalization of Serre duality, and gives a satisfactory description of this behaviour in dimension at most three. On the way we show other properties of linked schemes.

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Marc Chardin. 2003-09-11. Liaison of varieties of small dimension and deficiency modules. https://arxiv.org/abs/math/0210441

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