Noetherian extensions of commutative rings

被引:0
作者
Chang, Gyu Whan [1 ]
Hamdi, Haleh [2 ]
机构
[1] Incheon Natl Univ, Dept Math Educ, Incheon 22012, South Korea
[2] Univ Tabriz, Fac Math Sci, Dept Pure Math, Tabriz, Iran
基金
新加坡国家研究基金会;
关键词
Noetherian extension; Global transform; r-Noetherian ring; Krull ring; INTEGRAL CLOSURE; REGULAR IDEALS; MAROT RING;
D O I
10.1016/j.jalgebra.2019.05.039
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let A subset of B be an extension of commutative rings with identity and T(A) (resp., T(B)) be the total quotient ring of A (rasp., B). We say that A is a B-Noetherian ring if every ideal I of A with IB = B is finitely generated, and the extension A subset of B is called a Noetherian extension if A is B-Noetherian. In this paper, among other things, we introduce the ring A(g(B)), the global transform of A in B. We then show that if x is an element of A is B-regular (i.e., xB = B) and R is a ring between A and A(g(B)), then R/xR is a Noetherian A-module and every ideal of R containing x is finitely generated. We also study some conditions on A and B under which if A is B-Noetherian with dim(B) A = 1, then any ring between A and B is B-Noetherian. This is the Krull-Akizuki theorem when A is an integral domain and B = T(A). Finally, we prove that if T(B) is integral over T(A) and A is integrally closed in B, then every ideal I of A with IB = B is t-invertible, i.e., (II-1)(t) = A. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码:344 / 357
页数:14
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