Relationships between algebraic connectivity and vertex connectivity

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作者
Clarianne Luciola de A. V. M. Lucas
Renata R. Del-Vecchio
Maria Aguieiras A. de Freitas
Joice Santos do Nascimento
机构
[1] COPPE/PEP,
[2] Universidade Federal do Rio de Janeiro,undefined
[3] IME,undefined
[4] Universidade Federal Fluminense,undefined
[5] IM,undefined
[6] Universidade Federal do Rio de Janeiro,undefined
[7] IME,undefined
[8] Universidade do Estado do Rio de Janeiro,undefined
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关键词
Algebraic connectivity; Vertex connectivity; Laplacian integral graphs; Non-Laplacian integral graphs; 05C50; 05C75; 05C76;
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摘要
In this article, we investigate the relationship between algebraic and vertex connectivities of graphs, studying the difference between these two parameters. Cographs belong to the class of Laplacian integral graphs. In this paper, we prove that the algebraic and vertex connectivities of these graphs are equal. We also build infinite families of Laplacian and non-Laplacian integral graphs satisfying distinct relationships between these connectivities.
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