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Generalized Matlis duality
Authors:Richard G Belshoff  Edgar E Enochs  Juan Ramon Garcí  a Rozas
Institution:Department of Mathematics, Southwest Missouri State University, Springfield, Missouri 65804 ; Department of Mathematics, University of Kentucky, Lexington, Kentucky 40506 ; Department of Algebra and Analysis, University of Almería 04120 Almería, Spain
Abstract:Let $R$ be a commutative noetherian ring and let $E$ be the minimal injective cogenerator of the category of $R$-modules. A module $M$ is said to be reflexive with respect to $E$ if the natural evaluation map from $M$ to $\Hom _R( \Hom _R(M,E), E)$ is an isomorphism. We give a classification of modules which are reflexive with respect to $E$. A module $M$ is reflexive with respect to $E$ if and only if $M$ has a finitely generated submodule $S$ such that $M/S$ is artinian and $R/\ann(M)$ is a complete semi-local ring.

Keywords:Matlis  duality
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