50 citations · 99 across the 15 of their papers we have counts for
6 papers · 1 filter
Half-line compressions and finite sections of discrete Schrödinger operators with integer-valued potentials
Marko Lindner, Riko Ukena
We study 1D discrete Schrödinger operators with integer-valued potential and show that, , invertibility (in fact, even just Fredholmness) of always implies invertibili…
A note on Hausdorff-convergence of pseudospectra
Marko Lindner, Dennis Schmeckpeper
For a bounded linear operator on a Banach space, we study approximation of the spectrum and pseudospectra in the Hausdorff distance. We give sufficient and necessary conditions in…
Minimal Families of Limit Operators
Marko Lindner
We study two abstract scenarios, where an operator family has a certain minimality property. In both scenarios, it is shown that norm, spectrum and resolvent are the same for all f…
Circulant matrices: norm, powers, and positivity
Marko Lindner
In their recent paper "The spectral norm of a Horadam circulant matrix", Merikoski, Haukkanen, Mattila and Tossavainen study under which conditions the spectral norm of a general r…
Essential pseudospectra and essential norms of band-dominated operators
Raffael Hagger, Marko Lindner, Markus Seidel
An operator on an -space is called band-dominated if it can be approximated, in the operator norm, by operators with a banded matrix representation. The coset of in th…
An Affirmative Answer to a Core Issue on Limit Operators
Marko Lindner, Markus Seidel
An operator on an -space is called band-dominated if it can be approximated, in the operator norm, by operators with a banded matrix representation. It is known that a rich…