Showing 2020 · math.FAShow all
2 papers · 2 filters
math.FA2020
The structure of group preserving operators
Davide Barbieri, Carlos Cabrelli, Diana Carbajal +2
In this paper, we prove the existence of a particular diagonalization for normal bounded operators defined on subspaces of where is a second coun…
math.FA2020
Data approximation with time-frequency invariant systems
D. Barbieri, C. Cabrelli, E. Hernández +1
In this paper we prove the existence of a time-frequency space that best approximates a given finite set of data. Here best approximation is in the least square sense, among all ti…