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arXiv · 1009.0667

Expander graphs from Curtis Tits groups

Rieuwert Blok·Corneliu Hoffman·Alina Vdovina
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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.

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Rieuwert Blok, Corneliu Hoffman, Alina Vdovina. 2010-09-03. Expander graphs from Curtis Tits groups. https://doi.org/10.1016/j.jcta.2011.10.007

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