29 citations · 64 across the 12 of their papers we have counts for
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math.SP2021★ 2 cited
Spectral estimates of dynamically-defined and amenable operator families
Siegfried Beckus, Alberto Takase
We consider kernel operators defined by a dynamical system. The Hausdorff distance of spectra is estimated by the Hausdorff distance of subsystems. We prove that the spectrum map i…
math.DS2021★ 1 cited
Symbolic substitution systems beyond abelian groups
Siegfried Beckus, Tobias Hartnick, Felix Pogorzelski
In this article we construct the first examples of strongly aperiodic linearly repetitive Delone sets in non-abelian Lie groups by means of symbolic substitutions. In particular, w…