3 papers
math.NA2026
PhaseJumps: fast computation of zeros from planar grid samples
Antti Haimi, Günther Koliander, José Luis Romero
We consider complex-valued functions on the complex plane and the task of computing their zeros from samples taken along a finite grid. We introduce PhaseJumps, an algorithm based…
math.PR2024
Hyperuniformity and non-hyperuniformity of zeros of Gaussian Weyl-Heisenberg Functions
Naomi Feldheim, Antti Haimi, Günther Koliander +1
We study zero sets of twisted stationary Gaussian random functions on the complex plane, i.e., Gaussian random functions that are stochastically invariant under the action of the W…
math.FA2023
Rotated time-frequency lattices are sets of stable sampling for continuous wavelet systems
Nicki Holighaus, Günther Koliander
We provide an example for the generating matrix of a two-dimensional lattice , such that the following holds: For any sufficiently smooth and localized mother…