On d -towers of graphs
Algebraic Combinatorics, Volume 6 (2023) no. 5, pp. 1331-1346.

Let be a rational prime. We show that an analogue of a conjecture of Greenberg in graph theory holds true. More precisely, we show that when n is sufficiently large, the -adic valuation of the number of spanning trees at the nth layer of a d -tower of graphs is given by a polynomial in n and n with rational coefficients of total degree at most d and of degree in n at most one.

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DOI: 10.5802/alco.304
Classification: 05C25, 11R18, 11R23, 11Z05
Keywords: Ihara zeta functions, Iwasawa theory, spanning trees
DuBose, Sage 1; Vallières, Daniel 1

1 California State University Mathematics and Statistics Department Chico CA 95929 USA
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
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DuBose, Sage; Vallières, Daniel. On $\mathbb{Z}_{\ell }^{d}$-towers of graphs. Algebraic Combinatorics, Volume 6 (2023) no. 5, pp. 1331-1346. doi : 10.5802/alco.304. https://alco.centre-mersenne.org/articles/10.5802/alco.304/

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