15 citations · 68 across the 21 of their papers we have counts for
21 papers
Curves defined by a class of discrete operators: approximation result and applications
Rosario Corso, Gabriele Gucciardi
In approximation theory classical discrete operators, like generalized sampling, Szász-Mirak'jan, Baskakov and Bernstein operators, have been extensively studied for scalar functio…
Weighted frames, weighted lower semi frames and unconditionally convergent multipliers
Peter Balazs, Rosario Corso, Diana Stoeva
In this paper we ask when it is possible to transform a given sequence into a frame or a lower semi frame by multiplying the elements by numbers. In other words, we ask when a give…
Estimate of the spectral radii of Bessel multipliers and consequences
Rosario Corso
Bessel multipliers are operators defined from two Bessel sequences of elements of a Hilbert space and a complex sequence, and have frame multipliers as particular cases. In this pa…
Some perturbation results for quasi-bases and other sequences of vectors
Fabio Bagarello, Rosario Corso
We discuss some perturbation results concerning certain pairs of sequences of vectors in a Hilbert space $\Hil$ and producing new sequences which share, with the original ones, { r…
Non-existence of patterns for a class of weighted degenerate operators
Giulio Ciraolo, Rosario Corso, Alberto Roncoroni
A classical result by Casten-Holland and Matano asserts that constants are the only positive and stable solutions to semilinear elliptic PDEs subject to homogeneous Neumann boundar…
Localization of the spectra of dual frames multipliers
Rosario Corso
This paper concerns dual frames multipliers, i.e. operators in Hilbert spaces consisting of analysis, multiplication and synthesis processes, where the analysis and the synthesis a…