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Finite unions of submodules
Stockholm University, Faculty of Science, Department of Mathematics.
2015 (English)In: Communications in Algebra, ISSN 0092-7872, E-ISSN 1532-4125, Vol. 43, no 2, 847-855 p.Article in journal (Refereed) Published
Abstract [en]

This paper is concerned with finite unions of ideals and modules. The first main result is that, if N ⊆ N 1 ∪N 2 ∪ … ∪ N s is a covering of a module N by submodules N i , such that all but two of the N i are intersections of strongly irreducible modules, then N ⊆ N k for some k. The special case when N is a multiplication module is considered. The second main result generalizes earlier results on coverings by primary submodules. In the last section unions of cosets is studied.

Place, publisher, year, edition, pages
2015. Vol. 43, no 2, 847-855 p.
Keyword [en]
ideal, ring, union
National Category
Algebra and Logic
Research subject
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-109702DOI: 10.1080/00927872.2013.851204ISI: 000348438100035OAI: oai:DiVA.org:su-109702DiVA: diva2:766506
Available from: 2014-11-27 Created: 2014-11-27 Last updated: 2017-12-05Bibliographically approved

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CiteExportLink to record
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