Expander graphs from Curtis Tits groups

Abstract

Using the construction of a nonorientable Curtis-Tits group of type ${\tilde{A}}_n$, we obtain new explicit families of expander graphs of valency five for unitary groups over finite fields.

Some results are strengthened

References in corpus (1)

• Abstract involutions of algebraic groups and of Kac-Moody groups

Cited by in corpus (1)

• Realizations and properties of $3$-spherical Curtis-Tits Groups and Phan groups