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math.GR2026
On the growth spectrum of hyperbolic groups
Rémi Coulon, Michail Louvaris, Daniel T. Wise +1
We study the growth spectrum of groups acting on hyperbolic spaces, i.e.\ the set of exponential growth rates achieved by subgroups. For a finitely generated free group or a surfac…
math.GR2025
Subgroups of a free group with every growth rate
Michail Louvaris, Daniel T. Wise, Gal Yehuda
For every , we show there exists a subgroup whose growth rate is .
math.GR2024
On the spectral radius of the non-backtracking matrix of the configuration model
Michail Louvaris, Daniel T. Wise, Gal Yehuda
We prove a concentration result for the leading eigenvalue of the non--backtracking matrix of the configuration model under the assumption of uniformly bounded degrees. Let den…