WEAKLY SEPARATED BESSEL SYSTEMS OF MODEL SPACES

ALBERTO DAYAN
2021 Canadian mathematical bulletin  
We show that any weakly separated Bessel system of model spaces in the Hardy space on the unit disc is a Riesz system and we highlight some applications to interpolating sequences of matrices. This will be done without using the recent solution of the Feichtinger conjecture, whose natural generalization to multi-dimensional model sub-spaces of H 2 turns out to be false.
doi:10.4153/s0008439521000850 fatcat:vky7mm4e6vaxldj4qots5a7jvy