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20102026
most citedLinear independence of translates implies linear independence of affine Parseval frames on LCA groups

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math.CA2026

Dynamical Sampling in Graph Paley--Wiener Spaces

Iulia Martina Bulai, Carlos Cabrelli, Elena Cordero +2

We study dynamical sampling for graph signals using the spectral theory of the normalized graph Laplacian. Graph Paley-Wiener spaces GPW_w are defined as spectral subspaces associa…

math.NA2026

Uniform Chebyshev approximations of functions satisfying a variation-type condition: reconstruction of time-varying signals on graphs

Davide Bianchi, Sandra Saliani, Dimitrios Vavitsas

We prove uniform approximation theorems for Chebyshev expansions of continuous functions of two variables. Under a variation-type condition on the square , a continuous f…