2 papers
math.SP2022
Spectral multiplicity of selfadjoint Schroedinger operators on star-graphs with general interface conditions
Sergey Simonov, Harald Woracek
We consider selfadjoint operators obtained by pasting a finite number of boundary relations with one-dimensional boundary space. A typical example of such an operator is the Schröd…
math.SP2012
Spectral multiplicity of selfadjoint Schroedinger operators on star-graphs with standard interface conditions
Sergey Simonov, Harald Woracek
We analyze the singular spectrum of selfadjoint operators which arise from pasting a finite number of boundary relations with a standard interface condition. A model example for th…