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Yahya Talebi

Yahya Talebi

Academic rank: Professor
ORCID: https://orcid.org/0000-0003-2311-4628
Education: PhD.
ScopusId:
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Faculty: Faculty of Mathematical Sciences
Address: Dep. Math. University of Mazandaran
Phone: 01135302467

Research

Title
Modules for which every non-cosingular submodule is a summand
Type
JournalPaper
Keywords
non-cosingular submodule, amply supplemented module, NS-module
Year
2017
Journal Bulletin of the Iranian Mathematical Society
DOI
Researchers Yahya Talebi ، Mehrab Hosseinpour ، Ali Reza Moniri Hamzekolaee

Abstract

A module M is lifting if and only if M is amply supple- mented and every coclosed submodule of M is a direct summand. In this paper, we are interested in a generalization of lifting modules by re- moving the condition "amply supplemented" and just focus on modules such that every non-cosingular submodule of them is a summand. We call these modules NS.We investigate some general properties of NS-modules. Several examples are provided to separate different concepts. It is shown that every non-cosingular NS-module is a direct sum of indecomposable modules. We also discuss on nite direct sums of NS-modules.