A. Donno

activity

20092022

most citedCounting dimer coverings on self-similar Schreier graphs

23 citations · 187 across the 26 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

math.CO2021★ 10 cited

On cospectrality of gain graphs

Matteo Cavaleri, Alfredo Donno

We define $G$ -cospectrality of two $G$ -gain graphs $(Γ, ψ)$ and $(Γ^{'}, ψ^{'})$ , proving that it is a switching isomorphism invariant. When $G$ is a finite group, we prove that $G$ -cospec…

math.GR2021

On an uncountable family of graphs whose spectrum is a Cantor set

Matteo Cavaleri, Daniele D'Angeli, Alfredo Donno +1

For each $p \geq 1$ , the star automaton group $G_{S_{p}}$ is an automaton group which can be defined starting from a star graph on $p + 1$ vertices. We study Schreier graphs a…

math.CO2021★ 6 cited

Characterizations of line graphs in signed and gain graphs

Matteo Cavaleri, Daniele D'Angeli, Alfredo Donno

We generalize three classical characterizations of line graphs to line graphs of signed and gain graphs: the Krausz's characterization, the van Rooij and Wilf's characterization an…