It is shown that there are groups Γ with finite generating sets S such that the adjacency operator of the Cayley graph Cay(Γ,S) is a disjoint union of N intervals, for arbitrarily large integers N.
No takes yet. Share an insight, caveat, or question.
Pierre de la Harpe (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: