On tau-discrete modules

Author:

Nişancı Türkmen Burcu1ORCID,Türkmen Ergül2ORCID

Affiliation:

1. AMASYA ÜNİVERSİTESİ

2. AMASYA UNIVERSITY

Abstract

An R-module M is said to be (quasi) τ-discrete if M is τ-lifting and has the property (D_2) (respectively, has the property (D_3)), where τ is a preradical in R-mod. It is shown that: (1) direct summands of a (quasi) τ-discrete module are (quasi) τ-discrete; (2) a projective module M is τ-discrete iff M/(τ(M)) is semisimple and τ(M) is QSL; (3) if a projective module M is Soc-lifting, then M/(Soc(M)) is Soc-discrete and Rad(M/Soc(M) ) is semisimple.

Publisher

Erzincan Universitesi Fen Bilimleri Ensitusu Dergisi

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