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The derived category of a locally complete intersection ring

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arxiv 1805.07627 v1 pith:OZV5YVHL submitted 2018-05-19 math.AC math.CT

classification math.ACmath.CT
keywords completeintersectionringcomplexeveryfinitelygeneratedhomology
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abstract

In this paper, we answer a question of Dwyer, Greenlees, and Iyengar by proving a local ring $R$ is a complete intersection if and only if every complex of $R$-modules with finitely generated homology is proxy small. Moreover, we establish that a commutative noetherian ring $R$ is locally a complete intersection if and only if every complex of $R$-modules with finitely generated homology is virtually small.

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