David Jornet

collaborators

3 papers

math.FA2026

Stability of global wave front sets by perturbations of frames

Chiara Boiti, David Jornet, Alessandro Oliaro

In this paper we consider the Gabor wave front set of ultradistributions in the frame of ultradifferentiable functions. We prove that such a wave front set, defined through a Gabor…

math.FA2024

On the compactness of the Weyl operator in $S_{I ¨} $

Vicente Asensio, Chiara Boiti, David Jornet +1

We characterize, using time-frequency analysis, the continuity and compactness of the Weyl operator in global classes of ultradifferentiable functions $S_{I ¨} $ , for weight…

math.FA2024

Construction of the log-convex minorant of a sequence ${M_{I^} \pm}_{I^\pm \in N_{0}^{d}}$

Chiara Boiti, David Jornet, Alessandro Oliaro +1

We give a simple construction of the log-convex minorant of a sequence ${M_{I^} \pm}_{I^\pm \in N_{0}^{d}}$ and consequently extend to the $d$ -dimensional case the well-known formula t…

Stability of global wave front sets by perturbations of frames

On the compactness of the Weyl operator in SI¨​

Construction of the log-convex minorant of a sequence {MI^​±}I^±∈N0d​​

On the compactness of the Weyl operator in $S_{I ¨} $

Construction of the log-convex minorant of a sequence ${M_{I^} \pm}_{I^\pm \in N_{0}^{d}}$