A variation of supplemented modules

Authors: GÖKHAN BİLHAN, AYŞE TUGBA GÜROĞLU

Abstract: Over a general ring, an R-module is w-supplemented if and only if amply w-supplemented. It is proved that over a local Dedekind domain, all modules are w-supplemented and over a non-local Dedekind domain, an R-module M is w-supplemented if and only if Soc(M)\ll M or M=S_0 \oplus (\bigoplus_{i \in I} K), where S_0 is a torsion, semisimple submodule of M and K is the field of quotients of R.

Keywords: Modules, w-supplemented, Dedekind domain

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