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Spectrum of Schrödinger operators on subcovering graphs
Natalia Saburova
We consider discrete Schrödinger operators with real periodic potentials on periodic graphs. The spectra of the operators consist of a finite number of bands. By "rolling up" a per…
math.SP2024
Asymptotic isospectrality of Schrödinger operators on periodic graphs
Natalia Saburova
We consider discrete Schrödinger operators with periodic potentials on periodic graphs. Their spectra consist of a finite number of bands. We perturb a periodic graph by adding edg…