non-Noetherian r-Noetherian ring with Noetherian total quotient ring

A commutative ring is said to be r-Noetherian if every regular ideal is finitely generated, where an ideal is said to be regular if it contains a non-zerodivisor. Does there exist a non-Noetherian r-Noetherian commutative ring whose total quotient ring is Noetherian?

EDIT: A commutative ring is Dedekind if every regular ideal is invertible. (A domain is Dedekind if and only if it is a Dedekind domain.) Does there exist a non-Noetherian Dedekind ring whose total quotient ring is Noetherian?

The motivation for this question is that conditions like r-Noetherian and Dedekind control only the regular ideals of a ring and one can try to use the total quotient ring to control the non-regular ideals. By this philosophy one would hope that an r-Noetherian ring is Noetherian if its total quotient ring is Noetherian. But there is no obvious proof of this, leading to the desire for a counterexample.

Answer

I believe I have answered my question in the positive. Let R=Z+εQ[ε], where Q[ε] denotes the ring of dual numbers over Q. Then R is the integral closure of Z in the total quotient ring Q[ε] of R, so in particular R is integrally closed. Every regular ideal of R is principal, and every finitely generated ideal of R is principal, R is non-Noetherian, and yet the total quotient ring Q[ε] of R is Noetherian.

Attribution
Source : Link , Question Author : Jesse Elliott , Answer Author : Jesse Elliott

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