On Almost n-layered QTAG-modules

Author(s):

A. Hasan *

Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
We define the notion of almost $n$-layered $QTAG$-modules and study their basic properties. One of the main result is that almost 1-layered modules are almost $(omega+1)$-projective exactly when they are almost direct sum of countably generated modules of length less than or equal to $(omega+1)$. Some other characterizations of this new class are also established.
Keywords:

$QTAG$-modules , Almost $Sigma$-uniserial modules , Almost $(omega+n)$-projective modules , Almost 1-layered modules

Language:
English
Published:
Iranian Journal of Mathematical Sciences and Informatics, Volume:13 Issue: 2, Nov 2018
Pages:
163 to 171
https://www.magiran.com/p1897899