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  1. INJECTIVE RESOLVENTS AND PREENVELOPES

    INJECTIVE RESOLVENTS AND PREENVELOPES

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Overtoun Jenda --- Department of Mathematics, Botswana
    Let R be a noetherian ring, and denote the full subcategories of R-modules L such that Exti(E,L)=0 for all injective R-modules E for 1⋚i⋚n and O⋚i⋚n by Cn, and C′n respectively. Then LεCn, if and only if every injective resolution...
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  2. COPURE INJECTIVE MODULES

    COPURE INJECTIVE MODULES

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: EdgarE. Enochs --- Department of Mathematics, USA Overtoun M. G. Jenda --- Department of Algebra, USA
    A module is said to be copure injective if it is injective with respect to all modules A ⊂ B with B/A injective. We first characterize submodules that have the extension property with respect to copure injective modules. Then we...
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