AU - Estaji, A. A.
AU - Karimi Feizabadi, A.
AU - Robat Sarpoushi, M.
TI - Sums of Strongly z-Ideals and Prime Ideals in ${mathcal{R}} L$
PT - JOURNAL ARTICLE
TA - IJMSI
JN - IJMSI
VO - 15
VI - 1
IP - 1
4099 - http://ijmsi.ir/article-1-1025-en.html
4100 - http://ijmsi.ir/article-1-1025-en.pdf
SO - IJMSI 1
ABĀ - It is well-known that the sum of two $z$-ideals in $C(X)$ is either $C(X)$ or a $z$-ideal. The main aim of this paper is to study the sum of strongly $z$-ideals in ${mathcal{R}} L$, the ring of real-valued continuous functions on a frame $L$. For every ideal $I$ in ${mathcal{R}} L$, we introduce the biggest strongly $z$-ideal included in $I$ and the smallest strongly $z$-ideal containing $I$, denoted by $I^{sz}$ and $I_{sz}$, respectively. We study some properties of $I^{sz}$ and $I_{sz}$. Also, it is observed that the sum of any family of minimal prime ideals in the ring ${mathcal{R}} L$ is either ${mathcal{R}} L$ or a prime strongly $z$-ideal in ${mathcal{R}} L$. In particular, we show that the sum of two prime ideals in ${mathcal{R}} L$ such that are not a chain, is a prime strongly $z$-ideal.
CP - IRAN
IN - Faculty of Mathematics and Computer Sciences, Hakim Sabzevari University, Sabzevar, Iran.
LG - eng
PB - IJMSI
PG - 23
PT - Research paper
YR - 2020