BOUNDARY TRIPLES FOR SCHRöDINGER OPERATORS WITH SINGULAR INTERACTIONS ON HYPERSURFACES

On the Robin eigenvalues of the Laplacian in the exterior of a convex polygon

Laplacians with singular perturbations supported on hypersurfaces

On the asymptotics of the principal eigenvalue for a Robin problem with a large parameter in planar domains

APPROXIMATION OF EIGENVALUES OF SCHRöDINGER OPERATORS

Existence of solutions for semilinear elliptic boundary value problems on arbitrary open sets

Homogenization of acoustic equations for a partially perforated elastic material with slightly viscous fluid

On spectral projection for the complex Neumann problem

On the spectral properties of a non-coercive mixed problem associated with ∂-operator

Degeneration of boundary layer at singular points