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math.SP2023
Spectral Theory for Schrödinger operators on compact metric graphs with and couplings: a survey
Jonathan Rohleder, Christian Seifert
Spectral properties of Schrödinger operators on compact metric graphs are studied and special emphasis is put on differences in the spectral behavior between different classes of v…
math.FA2023
Perturbations of non-autonomous second-order abstract Cauchy problems
Christian Budde, Christian Seifert
In this paper we present time-dependent perturbations of second-order non-autonomous abstract Cauchy problems associated to a family of operators with constant domain. We make use…