Mathematics – Commutative Algebra
Scientific paper
2010-01-28
Mathematics
Commutative Algebra
16 pages
Scientific paper
We introduce the concept of \textit{quasi-stable} ideal in an integral domain $D$ (a nonzero fractional ideal $I$ of $D$ is quasi-stable if it is flat in its endomorphism ring $(I \colon I)$) and study properties of domains in which each nonzero fractional ideal is quasi-stable. We investigate some questions about flatness that were raised by S. Glaz and W.V. Vasconcelos in their 1977 paper \cite{GV}.
Picozza Giampaolo
Tartarone Francesca
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