Quasirandom Cayley graphs

We prove that the properties of having small discrepancy and having small second eigenvalue are equivalent in Cayley graphs, extending a result of Kohayakawa, R¨odl, and Schacht, who treated the abelian case. The proof relies on Grothendieck’s inequality. As a corollary, we also prove that a similar...

ver descrição completa

Detalhes bibliográficos
Principais autores: Conlon, D, Zhao, Y
Formato: Journal article
Publicado em: Discrete Analysis 2017
Descrição
Resumo:We prove that the properties of having small discrepancy and having small second eigenvalue are equivalent in Cayley graphs, extending a result of Kohayakawa, R¨odl, and Schacht, who treated the abelian case. The proof relies on Grothendieck’s inequality. As a corollary, we also prove that a similar result holds in all vertex-transitive graphs.