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Yahya Talebi

Yahya Talebi

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

Research

Title
ON H-COFINITELY SUPPLEMENTED MODULES
Type
JournalPaper
Keywords
H-supplemented module, H-co finitely supplemented module, radical-projective module.
Year
2013
Journal Bulletin of the Iranian Mathematical Society
DOI
Researchers Yahya Talebi ، Rachid Tribak ، Ali Reza Moniri Hamzekolaee

Abstract

A module M is called H-co nitely supplemented if for every co nite submodule E (i.e. M=E is nitely generated) of M there exists a direct summand D of M such that M = E+X holds if and only if M = D+X, for every submodule X of M. In this paper we study factors, direct summands and direct sums of H-co nitely supplemented modules. Let M be an H-co nitely supplemented module and let N  M be a submodule. Suppose that for every direct summand K of M, (N + K)=N lies above a direct summand of M=N. Then M=N is H-co nitely supplemented. Let M be an H-co nitely supplemented module. Let N be a direct summand of M. Suppose that for every direct summand K of M with M = N + K, N \ K is also a direct summand of M. Then N is H-co nitely supplemented. Let M = M1M2. If M1 is radical M2-projective (or M2 is radical M1-projective) and M1 and M2 are H-co nitely supplemented, then M is H-co nitely supplemented