DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jaehoon | ko |
dc.contributor.author | Kostochka, Alexandr, V | ko |
dc.contributor.author | Suil, O. | ko |
dc.contributor.author | Shi, Yongtang | ko |
dc.contributor.author | Wang, Zhiwen | ko |
dc.date.accessioned | 2022-12-05T03:00:22Z | - |
dc.date.available | 2022-12-05T03:00:22Z | - |
dc.date.created | 2022-12-05 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.citation | DISCRETE MATHEMATICS, v.346, no.2 | - |
dc.identifier.issn | 0012-365X | - |
dc.identifier.uri | http://hdl.handle.net/10203/301618 | - |
dc.description.abstract | For given graphs G and H, the graph G is H-saturated if G does not contain H as a subgraph but for any e is an element of E((G) over bar), G + e contains H. In this note, we prove that if G is an n-vertex Kr+1-saturated graph such that for each vertex v is an element of V (G), Sigma(w is an element of N(v)) d(G)(w) >= (r - 2)d(v) + (r - 1)(n - r + 1), then rho(G) >= rho(S-n,S-r), where S-n,S-r is the graph obtained from a copy of Kr-1 with vertex set S by adding n - r + 1 vertices, each of which has neighborhood S. This provides a sharp lower bound for the spectral radius in an n-vertex Kr+1-saturated graph for r = 2, 3, verifying a special case of a conjecture by Kim, Kim, Kostochka and O. (c) 2022 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | A sharp lower bound for the spectral radius in K-4-saturated graphs | - |
dc.type | Article | - |
dc.identifier.wosid | 000885354400003 | - |
dc.identifier.scopusid | 2-s2.0-85141454727 | - |
dc.type.rims | ART | - |
dc.citation.volume | 346 | - |
dc.citation.issue | 2 | - |
dc.citation.publicationname | DISCRETE MATHEMATICS | - |
dc.identifier.doi | 10.1016/j.disc.2022.113231 | - |
dc.contributor.localauthor | Kim, Jaehoon | - |
dc.contributor.nonIdAuthor | Kostochka, Alexandr, V | - |
dc.contributor.nonIdAuthor | Suil, O. | - |
dc.contributor.nonIdAuthor | Shi, Yongtang | - |
dc.contributor.nonIdAuthor | Wang, Zhiwen | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Saturated graphs | - |
dc.subject.keywordAuthor | Complete graphs | - |
dc.subject.keywordAuthor | Spectral radius | - |
dc.subject.keywordPlus | EIGENVALUES | - |
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