4 citations · 4 across the 1 of their papers we have counts for
4 papers
math.CO2020
A note on the structure of expanders
Itai Benjamini, Mikolaj Fraczyk
A conjecture regarding the structure of expander graphs is discussed.
math.CO2019★ 4 cited
Heat kernels are not uniform expanders
Mikolaj Fraczyk, Wouter van Limbeek
We study infinite analogues of expander graphs, namely graphs where subgraphs weighted by heat kernels form an expander family. Our main result is that there does not exist any inf…
math.AT2018
Growth of mod homology in higher rank locally symmetric spaces
Mikolaj Fraczyk
Let be a higher rank symmetric space or a Bruhat-Tits building of dimension at least such that the isometry group of has property . We prove that for every torsion…
math.GR2018
Kesten's theorem for uniformly recurrent subgroups
Mikolaj Fraczyk
We prove an inequality on the difference between the spectral radius of the Cayley graph of a group and the spectral radius of the Schreier graph for any subgro…