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dc.contributor.authorIvković, Stefanen
dc.date.accessioned2020-04-27T10:55:14Z-
dc.date.available2020-04-27T10:55:14Z-
dc.date.issued2020-01-01en
dc.identifier.issn1061-9208en
dc.identifier.urihttp://researchrepository.mi.sanu.ac.rs/handle/123456789/874-
dc.description.abstractIn this paper, we consider A-Fredholm and semi-A-Fredholm operators on Hilbert C*-modules over a W*-algebra A defined in [3] and [9]. Using the assumption that A is a W*-algebra (rather than an arbitrary C*-algebra), we obtain a generalization of Schechter—Lebow characterization of semi-Fredholm operators and a generalization of the “punctured neighborhood” theorem, as well as some other results generalizing their classical counterparts. We consider both adjointable and nonadjointable semi-Fredholm operators over W*-algebras. Moreover, we also work with general bounded adjointable operators with closed ranges over C*-algebras and prove a generalization of a Bouldin result for Hilbert spaces to Hilbert C*-modules.en
dc.publisherSpringer Link-
dc.relation.ispartofRussian Journal of Mathematical Physicsen
dc.titleOn Operators with Closed Range and Semi-Fredholm Operators Over W*-Algebrasen
dc.typeArticleen
dc.identifier.doi10.1134/S1061920820010057en
dc.identifier.scopus2-s2.0-85082434430en
dc.contributor.affiliationMathematical Institute of the Serbian Academy of Sciences and Arts-
dc.relation.firstpage48en
dc.relation.lastpage60en
dc.relation.issue1en
dc.relation.volume27en
dc.description.rankM22-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
item.openairetypeArticle-
crisitem.author.orcid0000-0003-2248-8206-
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