回调中的W-Jaffard域
W-Jaffard domains in pullbacks
摘要:
本文研究了$w$ -Jaffard整环类的拉回构造,并给出了这类整环的新例子.特别地,我们举例说明了两类$w$ -Jaffard域和Jaffard域是不可比较的.作为另一个应用,我们证明了对于每对正整数$(n,m)$和$n+1\leq m\leq 2n+1$,存在一个(整闭)整环$R$使得$w$和$w[X]$ - $\dim(R[X])=m$ .
英文摘要:
In this paper we study the class of $w$-Jaffard domains in pullback constructions, and give new examples of these domains. In particular we give examples to show that the two classes of $w$-Jaffard and Jaffard domains are incomparable. As another application, we establish that for each pair of positive integers $(n,m)$ with $n+1\leq m\leq 2n+1$, there is an (integrally closed) integral domain $R$ such that $w$-$\dim(R)=n$ and $w[X]$-$\dim(R[X])=m$.
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