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math-ph2022
Harmonic analysis in operator algebras and its applications to index theory and topological solid state systems
Hermann Schulz-Baldes, Tom Stoiber
This monograph develops the theory of Besov spaces for abelian group actions on semifinite von Neumann algebras and then proves Peller criteria for traceclass properties of associa…
math-ph2022
Spectral localization for semimetals and Callias operators
Hermann Schulz-Baldes, Tom Stoiber
A semiclassical argument is used to show that the low-lying spectrum of a selfadjoint operator, the so-called spectral localizer, determines the number of Dirac or Weyl points of a…