3 papers
math.FA2026
Maximal inequalities, frames and greedy algorithms
Pablo Berná, Daniel Freeman, Timur Oikhberg +1
The aim of this article is to use Banach lattice techniques to study coordinate systems in function spaces. We begin by proving that the greedy algorithm of a basis is order conver…
math.FA2025
The Cahill-Casazza-Daubechies problem on Hölder stable phase retrieval
Daniel Freeman, Mitchell A. Taylor
Phase retrieval using a frame for a finite-dimensional Hilbert space is known to always be Lipschitz stable. However, phase retrieval using a frame or a continuous frame for an inf…
cs.IT2025
On sharp stable recovery from clipped and folded measurements
Pedro Abdalla, Daniel Freeman, João P. G. Ramos +1
We investigate the stability of vector recovery from random linear measurements which have been either clipped or folded. This is motivated by applications where measurement device…