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math.NT2025
Iwasawa theory for branched -towers of finite graphs and Ihara zeta and -functions
Rusiru Gambheera, Daniel Vallières
We revisit the theory of Ihara -functions in the context initially studied by Bass and Hashimoto and more recently by Zakharov. In particular, we study if the Artin formalism is…
math.NT2025
An analogue of the Herbrand-Ribet theorem in graph theory
Daniel Vallières, Chase A. Wilson
We study an analogue of the Herbrand-Ribet theorem, and its refinement by Mazur and Wiles, in graph theory. For an odd prime number , we let and $\mathbb{Z}_{p}…