activity
20072026
most citedCompressed Sensing of Block-Sparse Signals: Uncertainty Relations and Efficient Recovery

1.3k citations · 1.5k across the 23 of their papers we have counts for

collaborators
Showing 2026Show all

2 papers · 1 filter

math.PR2026

Matrix Discrepancy for Representations of Finite Groups

Afonso S. Bandeira, Helmut Bölcskei

We prove the group version of the Matrix Spencer conjecture. For every finite group , there exist signs such that $$\left\| \sum_{g\in G} \varepsilon_…

math.FA2026

Entropy and Minimax Risk of Hypoelliptic Pseudodifferential Operators

Thomas Allard, Helmut Bölcskei

We characterize the entropy and minimax risk of a broad class of compact pseudodifferential operators. Under suitable decay and regularity conditions on the symbol, we combine a We…