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Questions related to the spectrum of graphs, defined using one of the possible variants of the discrete Laplace operator or Laplacian matrix. See https://en.wikipedia.org/wiki/Discrete_Laplace_operator

1 vote

Can the corollary of the Ihara–Bass formula be extended to $ u^2 = 1 $?

(I don't have enough reputation to comment). There are generalizations of Ihara-Bass result for adjacency matrix $A$ with $A_{ij}$ being some real number(see this paper, p. 13 and further). But even t …
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