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WHEN IS THE INTEGRAL CLOSURE COMPARABLE TO ALL INTERMEDIATE RINGS
Published online by Cambridge University Press: 19 October 2016
Abstract
Let $R\subset S$ be an extension of integral domains, with
$R^{\ast }$ the integral closure of
$R$ in
$S$ . We study the set of intermediate rings between
$R$ and
$S$ . We establish several necessary and sufficient conditions for which every ring contained between
$R$ and
$S$ compares with
$R^{\ast }$ under inclusion. This answers a key question that figured in the work of Gilmer and Heinzer [‘Intersections of quotient rings of an integral domain’, J. Math. Kyoto Univ.7 (1967), 133–150].
Keywords
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- Research Article
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- © 2016 Australian Mathematical Publishing Association Inc.
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