We give a decomposition theorem for Platonic graphs over finite fields and use this to determine the spectrum of these graphs. We also derive estimates for the isoperimetric numbers of the graphs. © 2006 Elsevier B.V. All rights reserved.
DeDeo, M., Lanphier, D., & Minei, M. (2007). The spectrum of Platonic graphs over finite fields. Discrete Mathematics, 307(9–10), 1074–1081. https://doi.org/10.1016/j.disc.2006.07.032