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math.SP2026
Spectral pollution in substitution systems
Ram Band, Siegfried Beckus, Felix Pogorzelski +1
We study spectral properties of Schrödinger operators associated with substitution dynamical systems in higher dimensions. Focusing on periodic approximations generated by iteratin…
math.SP2026
Random operators, spectral measures, and local empirical convergence in sofic groups
Miguel Donoso-Echenique, Felix Pogorzelski, Michael Schrödl-Baumann
In this paper, we consider the problem of approximating the spectral distribution for a class of random operators over sofic groups. For this purpose, we make use of the concept of…