On the spectral radius of block graphs having all their blocks of the same size
Revista con referato
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Inglés |
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Elsevier Science
2025
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| Acceso en línea: | http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2327 |
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I71-R177-UNGS-23272025-07-24T18:08:16Z On the spectral radius of block graphs having all their blocks of the same size Conde, Cristian Marcelo Dratman, Ezequiel Grippo, Luciano Norberto Block Graphs Spectral Radius of a Graph Gráficos de bloques Radio espectral de un gráfico Matemáticas Matemática Aplicada Revista con referato Fil: Conde, Cristian Marcelo. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Fil: Conde, Cristian Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Argentino de Matemática Alberto Calderón; Argentina. Fil: Dratman, Ezequiel. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Fil: Dratman, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Grippo, Luciano Norberto. Universidad Nacional de General Sarmiento. Instituto de Ciencias; Argentina. Fil: Grippo, Luciano Norberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Sea B(n,q) la clase de grafos de bloques con n vértices cuyos bloques son todos del mismo tamaño. Demostramos que si G∈B(n,q) tiene como máximo tres vértices de corte adyacentes por pares, el radio espectral mínimo ρ(G) se alcanza en un único grafo. Además, presentamos una cota inferior para ρ(G) cuando G∈B(n,q). Let B(n,q) be the class of block graphs on n vertices having all their blocks of the same size. We prove that if G∈B(n,q) has at most three pairwise adjacent cut vertices then the minimum spectral radius ρ(G) is attained at a unique graph. In addition, we present a lower bound for ρ(G) when G∈B(n,q). 2025-07-24T18:00:31Z 2025-07-24T18:00:31Z 2022 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion Conde, C. M., Dratman, E. y Grippo, L. N. (2022). On the spectral radius of block graphs having all their blocks of the same size. Linear Algebra and its Applications, 634, 137-148. 0024-3795 http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2327 eng https://doi.org/10.1016/j.laa.2021.11.006 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf application/pdf Elsevier Science Linear Algebra and its Applications. 2022; 634: 137-148 https://www.sciencedirect.com/journal/linear-algebra-and-its-applications/vol/634/suppl/C |
| institution |
Universidad Nacional de General Sarmiento |
| institution_str |
I-71 |
| repository_str |
R-177 |
| collection |
Repositorio Institucional Digital de Acceso Abierto (UNGS) |
| language |
Inglés |
| orig_language_str_mv |
eng |
| topic |
Block Graphs Spectral Radius of a Graph Gráficos de bloques Radio espectral de un gráfico Matemáticas Matemática Aplicada |
| spellingShingle |
Block Graphs Spectral Radius of a Graph Gráficos de bloques Radio espectral de un gráfico Matemáticas Matemática Aplicada Conde, Cristian Marcelo Dratman, Ezequiel Grippo, Luciano Norberto On the spectral radius of block graphs having all their blocks of the same size |
| topic_facet |
Block Graphs Spectral Radius of a Graph Gráficos de bloques Radio espectral de un gráfico Matemáticas Matemática Aplicada |
| description |
Revista con referato |
| format |
Artículo Artículo publishedVersion |
| author |
Conde, Cristian Marcelo Dratman, Ezequiel Grippo, Luciano Norberto |
| author_facet |
Conde, Cristian Marcelo Dratman, Ezequiel Grippo, Luciano Norberto |
| author_sort |
Conde, Cristian Marcelo |
| title |
On the spectral radius of block graphs having all their blocks of the same size |
| title_short |
On the spectral radius of block graphs having all their blocks of the same size |
| title_full |
On the spectral radius of block graphs having all their blocks of the same size |
| title_fullStr |
On the spectral radius of block graphs having all their blocks of the same size |
| title_full_unstemmed |
On the spectral radius of block graphs having all their blocks of the same size |
| title_sort |
on the spectral radius of block graphs having all their blocks of the same size |
| publisher |
Elsevier Science |
| publishDate |
2025 |
| url |
http://repositorio.ungs.edu.ar:8080/xmlui/handle/UNGS/2327 |
| work_keys_str_mv |
AT condecristianmarcelo onthespectralradiusofblockgraphshavingalltheirblocksofthesamesize AT dratmanezequiel onthespectralradiusofblockgraphshavingalltheirblocksofthesamesize AT grippolucianonorberto onthespectralradiusofblockgraphshavingalltheirblocksofthesamesize |
| _version_ |
1842217821439787008 |