Journal of the
Korean Mathematical Society
JKMS

ISSN(Print) 0304-9914 ISSN(Online) 2234-3008

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J. Korean Math. Soc. 2016; 53(5): 1057-1075

Printed September 1, 2016

https://doi.org/10.4134/JKMS.j150380

Copyright © The Korean Mathematical Society.

On $\phi$-Schreier rings

Ahmad Yousefian Darani and Mahdi Rahmatinia

University of Mohaghegh Ardabili, University of Mohaghegh Ardabili

Abstract

Let $R$ be a ring in which $Nil(R)$ is a divided prime ideal of $R$. Then, for a suitable property $X$ of integral domains, we can define a $\phi$-$X$-ring if $R/Nil(R)$ is an $X$-domain. This device was introduced by Badawi \cite{Ayman1} to study rings with zero divisors with a homomorphic image a particular type of domain. We use it to introduce and study a number of concepts such as $\phi$-Schreier rings, $\phi$-quasi-Schreier rings, $\phi$-almost-rings, $\phi$-almost-quasi-Schreier rings, $\phi$-$GCD$ rings, $\phi$-generalized $GCD$ rings and $\phi$-almost $GCD$ rings as rings $R$ with $Nil(R)$ a divided prime ideal of $R$ such that $R/Nil(R)$ is a Schreier domain, quasi-Schreier domain, almost domain, almost-quasi-Schreier domain, $GCD$ domain, generalized $GCD$ domain and almost $GCD$ domain, respectively. We study some generalizations of these concepts, in light of generalizations of these concepts in the domain case, as well. Here a domain $D$ is pre-Schreier if for all $x, y, z\in D\backslash 0,$ $x\mid yz$ in $D$ implies that $x=rs$ where $r\mid y$ and $s\mid z$. An integrally closed pre-Schreier domain was initially called a Schreier domain by Cohn in \cite{Cohn} where it was shown that a GCD domain is a Schreier domain.

Keywords: $\phi$-primal, $\phi$-Schreier ring, $\phi$-quasi-Schreier ring, $\phi$-$GCD$ ring

MSC numbers: Primary 16N99, 16S99; Secondary 06C05, 16N20

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