Operators with a given part of the numerical range

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dc.contributor.authorBracic, J.
dc.contributor.authorDiogo, C.
dc.date.accessioned2016-12-02T15:52:31Z
dc.date.available2016-12-02T15:52:31Z
dc.date.issued2016
dc.date.updated2019-04-09T10:46:35Z
dc.description.abstractSets of operators which have a given set of numbers in the numerical range are studied. We prove an interesting result which characterizes the set of operators that have 0 in the convex hull of its spectrum. Along the way we give a simpler proof of the well known Hildebrandt’s theorem.eng
dc.description.versioninfo:eu-repo/semantics/acceptedVersion
dc.distributionInternacionalpor
dc.identifier.doi10.1515/ms-2015-0134
dc.identifier.issn0139-9918
dc.identifier.urihttp://hdl.handle.net/10071/12125
dc.journalMathematica Slovaca
dc.language.isoeng
dc.number1
dc.pagination275 - 280
dc.peerreviewedyes
dc.publicationstatusPublicadopor
dc.publisherDe Gruyter
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/121837/PT
dc.rightsopen accesspor
dc.subjectNumerical rangeeng
dc.subjectHildebrandt’s theoremeng
dc.subject.fosDomínio/Área Científica::Ciências Naturais::Matemáticaspor
dc.titleOperators with a given part of the numerical rangeeng
dc.typearticle
dc.volume66
degois.publication.firstPage275
degois.publication.issue1
degois.publication.lastPage280
degois.publication.titleOperators with a given part of the numerical rangeeng
dspace.entity.typePublicationen
iscte.alternateIdentifiers.scopus2-s2.0-84969700146
iscte.alternateIdentifiers.wosWOS:000375745500025
iscte.identifier.cienciahttps://ciencia.iscte-iul.pt/id/ci-pub-22849

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