Module-theoretic generalization of commutative von Neumann regular rings

DD Anderson, S Chun, JR Juett - Communications in Algebra, 2019 - Taylor & Francis
Communications in Algebra, 2019Taylor & Francis
Jayaram and Tekir defined an R-module M, R is a commutative ring, to be “von Neumann
regular” if for each m∈ M, there exists an a∈ R such that R m= a M= a 2 M. Previously,
Fieldhouse called M “regular” if every submodule is pure and Ramamurthi and
Rangaswamy called M “strongly regular” if every finitely generated submodule is a direct
summand. We call these three notions JT-regular, F-regular, and strongly F-regular,
respectively. We define M to be almost locally simple if for each maximal ideal M of R, MM is …
Abstract
Jayaram and Tekir defined an R-module M, R is a commutative ring, to be “von Neumann regular” if for each there exists an such that Previously, Fieldhouse called M “regular” if every submodule is pure and Ramamurthi and Rangaswamy called M “strongly regular” if every finitely generated submodule is a direct summand. We call these three notions JT-regular, F-regular, and strongly F-regular, respectively. We define M to be almost locally simple if for each maximal ideal of R, is either a trivial or simple -module and weakly JT-regular if for each We show that JT-regular almost locally simple strongly F-regular F-regular weakly JT-regular and investigate when these implications can be reversed. We provide some new characterizations of these properties and investigate each property in the context where M is finitely generated or R is Dedekind or more generally J-Noetherian.
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