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Injective and colon properties of ideals in integral domains

  • Bruce Olberding EMAIL logo
Published/Copyright: November 19, 2007
Forum Mathematicum
From the journal Volume 19 Issue 6

Abstract

Let R be an integral domain with quotient field Q. For R-submodules X and Y of Q denote by [Y : X] the R-module . An ideal I of R is a colon-splitting ideal of R if for all ideals J and K of R. We examine colon-splitting ideals and use these results to characterize a special class of colon-splitting ideals, the ideals of injective dimension 1. We show that every nonzero ideal of a domain is a colon-splitting ideal (has injective dimension 1) if and only if every maximal ideal is a colon-splitting ideal (resp., has injective dimension 1). From this we deduce new characterizations of h-local Prüfer domains and almost maximal Prüfer domains.


(Communicated by Rüdiger Göbel)


Received: 2005-02-13
Revised: 2006-03-06
Published Online: 2007-11-19
Published in Print: 2007-11-20

© Walter de Gruyter

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