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dc.contributor.author고응일*
dc.date.accessioned2016-08-28T10:08:13Z-
dc.date.available2016-08-28T10:08:13Z-
dc.date.issued2013*
dc.identifier.issn0024-3795*
dc.identifier.otherOAK-9576*
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/223284-
dc.description.abstractIn this paper we provide some conditions for 2×2 operator matrices whose diagonal entries are class A operators to be subscalar. As a corollary, we get that such operators with rich spectra have nontrivial invariant subspaces. In addition, we show that the tensor product of a 2×2 upper triangular class A operator matrix and a class A operator has a scalar extension. Finally, we find some subscalar 2×2 operator matrices satisfying the operator equations ABA=A2 and BAB=B2. © 2012 Elsevier Inc. All rights reserved.*
dc.languageEnglish*
dc.titleOn subscalarity of some 2 × 2 class A operator matrices*
dc.typeArticle*
dc.relation.issue3*
dc.relation.volume438*
dc.relation.indexSCI*
dc.relation.indexSCIE*
dc.relation.indexSCOPUS*
dc.relation.startpage1322*
dc.relation.lastpage1338*
dc.relation.journaltitleLinear Algebra and Its Applications*
dc.identifier.doi10.1016/j.laa.2012.08.037*
dc.identifier.wosidWOS:000312610800025*
dc.identifier.scopusid2-s2.0-84870369446*
dc.author.googleKo E.*
dc.author.googleJung S.*
dc.author.googleKim Y.*
dc.contributor.scopusid고응일(57217846069)*
dc.date.modifydate20240116125046*
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자연과학대학 > 수학전공 > Journal papers
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