48 citations · 102 across the 24 of their papers we have counts for
Showing 2018Show all
3 papers · 1 filter
math.DS2018
Rigidity sequences, Kazhdan sets and group topologies on the integers
Catalin Badea, Sophie Grivaux, Etienne Matheron
We study the relationships between three different classes of sequences (or sets) of integers, namely rigidity sequences, Kazhdan sequences (or sets) and nullpotent sequences. We p…
math.FA2018
Sets of integers determined by operator-theoretical properties: Jamison and Kazhdan sets in the group
Catalin Badea, Sophie Grivaux
The aim of this partly expository paper is to present and discuss two classes of sets of integers (Jamison and Kazhdan sets) whose definition and/or properties are determined or in…
math.DS2018
Kazhdan constants, continuous probability measures with large Fourier coefficients and rigidity sequences
Catalin Badea, Sophie Grivaux
Exploiting a construction of rigidity sequences for weakly mixing dynamical systems by Fayad and Thouvenot, we show that for every integers there exists a conti…