Concept
Discrete group
Related publications (41)
A type I conjecture and boundary representations of hyperbolic groups
We establish new results on the weak containment of quasi-regular and Koopman representations of a second countable locally compact group G associated with nonsingular G-spaces. We deduce that any two boundary representations of a hyperbolic locally ...
WILEY2023Gradient-Based Learning of Discrete Structured Measurement Operators for Signal Recovery
Countless signal processing applications include the reconstruction of signals from few indirect linear measurements. The design of effective measurement operators is typically constrained by the underlying hardware and physics, posing a challenging and of ...
2022Fourier non-uniqueness sets from totally real number fields
Let K be a totally real number field of degree n >= 2. The inverse different of K gives rise to a lattice in Rn. We prove that the space of Schwartz Fourier eigenfunctions on R-n which vanish on the "component-wise square root" of this lattice, is infinite ...
EUROPEAN MATHEMATICAL SOC-EMS2022Invariant Integrals on Topological Groups and Applications
We study a fixed point property for linear actions of discrete groups on weakly complete convex proper cones in locally convex topological vector spaces. We search to understand the class of discrete groups which enjoys this property and we try to generali ...
EPFL2021