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math.GR2024
Embedding Partial HNN Extensions In Ascending HNN Extensions
Hip Kuen Chong, Daniel T. Wise
We show that any partial ascending HNN extension of a free group embeds in an actual ascending HNN extension of a free group. Moreover, we can ensure that it embeds as the paraboli…
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…