Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10224
Title: On simple-direct modules
Authors: Büyükaşık, Engin
Demir, Özlem
Diril, Müge
Keywords: Artinian rings
H-rings
Perfect rings
Torsion submodule
Issue Date: 2021
Publisher: Taylor and Francis Ltd.
Abstract: Recently, in a series of papers “simple” versions of direct-injective and direct-projective modules have been investigated. These modules are termed as “simple-direct-injective” and “simple-direct-projective,” respectively. In this paper, we give a complete characterization of the aforementioned modules over the ring of integers and over semilocal rings. The ring is semilocal if and only if every right module with zero Jacobson radical is simple-direct-projective. The rings whose simple-direct-injective right modules are simple-direct-projective are fully characterized. These are exactly the left perfect right H-rings. The rings whose simple-direct-projective right modules are simple-direct-injective are right max-rings. For a commutative Noetherian ring, we prove that simple-direct-projective modules are simple-direct-injective if and only if simple-direct-injective modules are simple-direct-projective if and only if the ring is Artinian. Various closure properties and some classes of modules that are simple-direct-injective (resp. projective) are given. © 2020 Taylor & Francis Group, LLC.
URI: https://doi.org/10.1080/00927872.2020.1821207
https://hdl.handle.net/10224
ISSN: 0092-7872
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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