22 citations · 107 across the 27 of their papers we have counts for
Showing 2023 · math.SPShow all
2 papers · 2 filters
math.SP2023
Relative residual bounds for eigenvalues in gaps of the essential spectrum
Albrecht Seelmann
The relative distance between eigenvalues of the compression of a not necessarily semibounded self-adjoint operator to a closed subspace and some of the eigenvalues of the original…
math.SP2023
Sturm-Liouville Problems And Global Bounds By Small Control Sets And applications to quantum graphs
Michela Egidi, Delio Mugnolo, Albrecht Seelmann
We develop a Logvinenko--Sereda theory for one-dimensional vector-valued self-adjoint operators. We thus deliver upper bounds on -norms of eigenfunctions -- and linear combina…