M. Langer

activity

20092023

most citedSchrödinger operators with delta and delta'-potentials supported on hypersurfaces

79 citations · 264 across the 22 of their papers we have counts for

collaborators

Showing 2017Show all

2 papers · 1 filter

math.SP2017★ 16 cited

Spectral enclosures for non-self-adjoint extensions of symmetric operators

Jussi Behrndt, Matthias Langer, Vladimir Lotoreichik +1

The spectral properties of non-self-adjoint extensions $A_{[B]}$ of a symmetric operator in a Hilbert space are studied with the help of ordinary and quasi boundary triples and the…

math.FA2017★ 3 cited

Spectrum of $J$ -frame operators

Juan Ignacio Giribet, Matthias Langer, Leslie Leben +3

A $J$ -frame is a frame $F$ for a Krein space $(H, [,])$ which is compatible with the indefinite inner product $[,]$ in the sense that it induces an…

Spectral enclosures for non-self-adjoint extensions of symmetric operators

Spectrum of J-frame operators

Spectrum of $J$ -frame operators