A review of Cayley graph properties and expander family

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In this paper some concepts used in graph theory are introduced, such as directed, undirected, connected, tree, regular or gradient, divergent or Laplacian graphs, and relationships between the diameter of the graph, or the largest second proper value of its adjacency matrix, with respect to the Che...

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Detalles Bibliográficos
Autor: Cortes Garcia, Christian Camilo
Formato: artículo
Fecha de Publicación:2020
Institución:Universidad Nacional de Trujillo
Repositorio:Revistas - Universidad Nacional de Trujillo
Lenguaje:español
OAI Identifier:oai:ojs.revistas.unitru.edu.pe:article/3109
Enlace del recurso:https://revistas.unitru.edu.pe/index.php/SSMM/article/view/3109
Nivel de acceso:acceso abierto
Materia:Generator set
isoperimetric constant
transitive vertex graph
group
free group
Conjunto generador
constante isoperimétrica
grafo vértice transitivo
grupo
grupo libre
Descripción
Sumario:In this paper some concepts used in graph theory are introduced, such as directed, undirected, connected, tree, regular or gradient, divergent or Laplacian graphs, and relationships between the diameter of the graph, or the largest second proper value of its adjacency matrix, with respect to the Cheeger constant to identify expander graphs k-regular. With these guidelines defined, some properties are introduced in Cayley graphs, with illustrative examples, and methodologies to identify if the corresponding graph is k-regular or a directed tree. Finally, Cayley expander graphs are related to their diameter or the second largest eigenvalue.
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