1 citations · 1 across the 7 of their papers we have counts for
7 papers
Frame constructions associated with operator orbits
Eva A. Gallardo-Gutiérrez, Jonathan R. Partington
This paper studies frames in Hilbert spaces generated by the orbits of (in)-finitely many vectors under a single operator, presenting new results on multiplication operators and op…
Spectral cuts and unconventional functional calculi
Eva A. Gallardo-Gutiérrez, F. Javier González-Doña
In this work, we prove that linear bounded operators on a Banach space allowing spectral cuts along rectifiable Jordan curves meeting their spectrum are related to classes…
Finite dimensional approximations for Hilbert space operators and applications in Quantum Mechanics
Eva A. Gallardo-Gutiérrez, Fernando Lledó, Laura Sáenz
In this work, we develop a unified framework for quasidiagonal and Følner-type approximations of linear operators on Hilbert spaces. These approximations (originally formulated for…
Invariant subspaces for finite index shifts in Hardy spaces
Filippo Bracci, Eva A. Gallardo-Gutiérrez
Let be the finite direct sums of . In this paper, we give a characterization of the closed subspaces of which are invariant under the shift,…
Rhaly operators: more on generalized Cesàro operators
Eva A. Gallardo-Gutiérrez, Jonathan R. Partington
Rhaly operators, as generalizations of the Cesàro operator, are studied from the standpoint of view of spectral theory and invariant subspaces, extending previous results by Rhaly…
Complete frequencies for Koenigs domains
Filippo Bracci, Eva A. Gallardo-Gutiérrez, Dmitry Yakubovich
We provide a complete characterization of those non-elliptic semigroups of holomorphic self-maps of the unit disc for which the linear span of eigenvectors of the generator of the…
Boundedness, compactness and Schatten-class membership of weighted composition operators
Eva A. Gallardo-Gutiérrez, Romesh Kumar, Jonathan R. Partington
The boundedness and compactness of weighted composition operators on the Hardy space of the unit disc is analysed. Particular reference is made to the case when th…