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math.FA2024
Factorization of positive-semidefinite operators with absolutely summable entries
Radu Balan, Fushuai Jiang
A problem by Feichtinger, Heil, and Larson asks whether every infinite matrix with (an equivalent substitute for the Feichtinger algebra) that is…
math.FA2018
A duality principle for groups II: Multi-frames meet super-frames
Radu Balan, Dorin Ervin Dutkay, Deguang Han +2
The duality principle for group representations developed in \cite{DHL-JFA, HL_BLM} exhibits a fact that the well-known duality principle in Gabor analysis is not an isolated incid…