24 citations · 77 across the 23 of their papers we have counts for
4 papers · 1 filter
Recovering quantum graph spectrum from vertex data
Jonathan Rohleder
We study the question to what extent spectral information of a Schrödinger operator on a finite, compact metric graph subject to standard or -type matching conditions can be rec…
An eigenvalue inequality for Schrödinger operators with and -interactions supported on hypersurfaces
Vladimir Lotoreichik, Jonathan Rohleder
We consider self-adjoint Schrödinger operators in with a -interaction of strength and a -interaction of strength , respectively, supported on a h…
Spectral analysis of selfadjoint elliptic differential operators, Dirichlet-to-Neumann maps, and abstract Weyl functions
Jussi Behrndt, Jonathan Rohleder
The spectrum of a selfadjoint second order elliptic differential operator in is described in terms of the limiting behavior of Dirichlet-to-Neumann maps, which…
Strict inequality of Robin eigenvalues for elliptic differential operators on Lipschitz domains
Jonathan Rohleder
On a bounded Lipschitz domain we consider two selfadjoint operator realizations of the same second order elliptic differential expression subject to Robin boundary conditions, wher…