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Signatures, lifts, and eigenvalues of graphs
[article]
2014
arXiv
pre-print
We study the spectra of cyclic signatures of finite graphs and the corresponding cyclic lifts. Starting from a bipartite Ramanujan graph, we prove the existence of an infinite tower of 3-cyclic lifts, each of which is again Ramanujan.
arXiv:1412.6841v1
fatcat:r4ttbitf7jhqvisunv33jntgaa