3 papers
math.GR2026
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…
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.GR2026
Growth of Approximate Groups in Hyperbolic Groups
Michael Saks, Gal Yehuda
We prove a growth dichotomy for infinite approximate groups, and more generally approximate semigroups, in hyperbolic groups. If \(G\) is a finitely generated hyperbolic group and…