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Please use this identifier to cite or link to this item: https://research.matf.bg.ac.rs/handle/123456789/694
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dc.contributor.authorMulas, Raffaellaen_US
dc.contributor.authorStanić, Zoranen_US
dc.date.accessioned2022-08-15T15:00:07Z-
dc.date.available2022-08-15T15:00:07Z-
dc.date.issued2022-
dc.identifier.urihttps://research.matf.bg.ac.rs/handle/123456789/694-
dc.description.abstractIn this article, we investigate connected signed graphs which have a connected star complement for both -2-2 and 2 (i.e. simultaneously for the two eigenvalues), where -2-2 (resp. 2) is the least (largest) eigenvalue of the adjacency matrix of a signed graph under consideration. We determine all such star complements and their maximal extensions (again, relative to both eigenvalues). As an application, we provide a new proof of the result which identifies all signed graphs that have no eigenvalues other than -2-2 and 2.en_US
dc.language.isoenen_US
dc.publisherDe Gruyteren_US
dc.relation.ispartofSpecial Matricesen_US
dc.subjectmaximal extensionen_US
dc.subjectsigned graph eigenvalueen_US
dc.subjectsigned line graphen_US
dc.subjectstar complementen_US
dc.titleStar complements for ±2 in signed graphsen_US
dc.typeArticleen_US
dc.identifier.doi10.1515/spma-2022-0161-
dc.identifier.scopus2-s2.0-85125249583-
dc.identifier.isi000755939600001-
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85125249583-
dc.contributor.affiliationNumerical Mathematics and Optimizationen_US
dc.relation.issn2300-7451en_US
dc.description.rankM22en_US
dc.relation.firstpage258en_US
dc.relation.lastpage266en_US
dc.relation.volume10en_US
dc.relation.issue1en_US
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.openairetypeArticle-
item.cerifentitytypePublications-
crisitem.author.deptNumerical Mathematics and Optimization-
crisitem.author.orcid0000-0002-4949-4203-
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