2 citations · 2 across the 14 of their papers we have counts for
19 papers
Composition operators on weighted modulation spaces
Héctor Ariza, Carmen Fernández, Antonio Galbis
We study composition operators whose symbols are suitable perturbations of the identity and which act between different weighted modulation classes. We consider both modulation spa…
Iterates of composition operators on global spaces of ultradifferentiable functions
Héctor Ariza, Carmen Fernández, Antonio Galbis
We analyze the behavior of the iterates of composition operators defined by polynomials acting on global classes of ultradifferentiable functions of Beurling type and being invaria…
Detecting quasicrystals with quadratic time-frequency distributions
Paolo Boggiatto, Carmen Fernández, Antonio Galbis +1
The usefulness of time-frequency analysis methods in the study of quasicrystals was pointed out in a previous paper, where we proved that a tempered distribution on ${\mathbb R…
Boundedness and compactness of Hausdorff operators on Fock spaces
Óscar Blasco, Antonio Galbis
We obtain a complete characterization of the bounded Hausdorff operators acting on a Fock space and taking its values into a larger one …
Composition operators on Gelfand-Shilov classes
Héctor Ariza, Carmen Fernández, Antonio Galbis
We study composition operators on global classes of ultradifferentiable functions of Beurling type invariant under Fourier transform. In particular, for the classical Gelfand-Shilo…
Wigner transform and quasicrystals
Paolo Boggiatto, Carmen Fernández, Antonio Galbis +1
Quasicrystals are tempered distributions which satisfy symmetric conditions on and . This suggests that techniques from time-frequency analysis could possibly b…